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/F0 12/Courier@0 SF(Network Working Group)56.692 84.944 Q(B. Lilly)309.6
E 345.6(Internet\255Draft July)56.692 96.944 R(2005)7.2 E
(Updates: 3462, 3464, 3798, 3886 \(if approved\))56.692 108.944 Q
(Expires: January 10, 2006)56.692 120.944 Q
(Extensible Message Application Interchange Language \(EMAIL\) --)92.692
144.944 Q(Part Two: Syntax, Semantics, and Media Types)157.492 156.944 Q
125.092 168.944 EBEGIN
[/Author (B. Lilly) /Title (Extensible Message Application Interchange Language (EMAIL) -- Part Two: Syntax, Semantics, and Media Types) /DOCINFO pdfmark
EEND/F0 12/Courier@0 SF
(draft-lilly-extensible-internet-message-format-p02\25500)125.092
168.944 Q(Status of this Memo)56.692 192.944 Q
(By submitting this Internet\255Draft, each author represents that any)
78.292 216.944 Q
(applicable patent or other IPR claims of which he or she is aware)
78.292 228.944 Q
(have been or will be disclosed, and any of which he or she becomes)
78.292 240.944 Q
(aware will be disclosed, in accordance with Section 6 of BCP 79.)78.292
252.944 Q
(Internet\255Drafts are working documents of the Internet Engineering)
78.292 276.944 Q
(Task Force \(IETF\), its areas, and its working groups.)78.292 288.944
Q(Note that)14.4 E
(other groups may also distribute working documents as)78.292 300.944 Q
(Internet\255Drafts.)78.292 312.944 Q(Internet\255Drafts are draft docu\
ments valid for a maximum of six months)78.292 336.944 Q
(and may be updated, replaced, or obsoleted by other documents at any)
78.292 348.944 Q 7.2(time. It)78.292 360.944 R
(is inappropriate to use Internet\255Drafts as reference)7.2 E
(material or to cite them other than as "work in progress.")78.292
372.944 Q(The list of current Internet\255Drafts can be accessed at)
78.292 396.944 Q(http://www.ietf.org/ietf/1id\255abstracts.txt.)78.292
408.944 Q
(The list of Internet\255Draft Shadow Directories can be accessed at)
78.292 432.944 Q(http://www.ietf.org/shadow.html.)78.292 444.944 Q
(Copyright Notice)56.692 468.944 Q 7.2(Copyright \251 The)78.292 492.944
R(Internet Society \(2005\).)7.2 E(Abstract)56.692 516.944 Q
(The Internet Message Format originally formally specified in RFC 561)
78.292 540.944 Q
(has been extended in some ways and for some purposes which have posed)
78.292 552.944 Q
(difficulties for some desirable operations such as digitally signed)
78.292 564.944 Q
(messages, have led to clutter in message content which in turn has)
78.292 576.944 Q
(led user agent implementers to suppress display of some originator)
78.292 588.944 Q
(message content, leading in some cases to user confusion, surprise,)
78.292 600.944 Q(and embarrassment.)78.292 612.944 Q
(This memo is part of a multi\255document series that)14.4 E
(specifies an extensible message format which is intended to)78.292
624.944 Q
(facilitate operations hampered by extensions to the current format)
78.292 636.944 Q
(and to reduce clutter in the user-to-user message content.)78.292
648.944 Q(This memo)14.4 E
(defines and provides registration information for media types)78.292
660.944 Q(relevant to the extensible message format.)78.292 672.944 Q
129.6(Lilly Expires)56.692 768.944 R(January 10, 2006)7.2 E([Page 1])
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/F0 12/Courier@0 SF 14.4(Internet\255Draft EMAIL)20.182 84.944 R
(Part 2: Syntax, Semantics, Media)7.2 E(July 2005)57.6 E
(Table of Contents)20.182 108.944 Q
(1. Introduction...................................................)
41.782 132.944 Q(3)14.4 E
(2. Multipart/email................................................)
41.782 144.944 Q(3)14.4 E
(2.1. Semantics.................................................)63.382
156.944 Q(3)14.4 E
(2.2. Syntax....................................................)63.382
168.944 Q(3)14.4 E
(2.3. Media Type Registration...................................)63.382
180.944 Q(5)14.4 E
(3. Message/email..................................................)
41.782 192.944 Q(7)14.4 E
(3.1. Semantics.................................................)63.382
204.944 Q(7)14.4 E
(3.2. Syntax....................................................)63.382
216.944 Q(7)14.4 E
(3.3. Media Type Registration...................................)63.382
228.944 Q(8)14.4 E
(4. Security Considerations........................................)
41.782 240.944 Q(9)14.4 E
(5. Internationalization Considerations............................)
41.782 252.944 Q(9)14.4 E
(6. IANA Considerations............................................)
41.782 264.944 Q(9)14.4 E
(Appendix A. Disclaimers...........................................)
41.782 276.944 Q(9)14.4 E
(Normative References.............................................. 10)
41.782 288.944 Q
(Informative References............................................ 10)
41.782 300.944 Q
(Author's Address.................................................. 11)
41.782 312.944 Q 129.6(Lilly Expires)20.182 768.944 R(January 10, 2006)
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(Part 2: Syntax, Semantics, Media)7.2 E(July 2005)57.6 E 56.692 108.944
EBEGIN
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EEND/F0 12/Courier@0 SF(1. Introduction)56.692 108.944 Q
(This memo will introduce two new media types which are used in the)
78.292 132.944 Q(construction of an extensible message format.)78.292
144.944 Q(Semantics of each)14.4 E
(media type will be presented in prose, syntax will be presented in)
78.292 156.944 Q
(accompanying normative prose, incorporating keywords defined in)78.292
168.944 Q
([N1.BCP14], and media type registration data will be presented using)
78.292 180.944 Q(the form specified in [I1.MediaReg].)78.292 192.944 Q
(The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHOULD",)78.292
216.944 Q
("SHOULD NOT" "RECOMMENDED" "MAY" and "OPTIONAL" in this document are)
78.292 228.944 Q(to be interpreted as described in [N1.BCP14],)78.292
240.944 Q 56.692 264.944 EBEGIN
[/Title (2. Multipart/email) /Dest (S2.1) /OUT pdfmark
EEND 56.692 264.944 EBEGIN
[/Dest (S2.1) /Page 3 /View [ /FitH 564 ] /DEST pdfmark
EEND/F0 12/Courier@0 SF(2. Multipart/email)56.692 264.944 Q 56.692
288.944 EBEGIN
[/Title (2.1. Semantics) /Dest (S2.1) /OUT pdfmark
EEND 56.692 288.944 EBEGIN
[/Dest (S2.1) /Page 3 /View [ /FitH 540 ] /DEST pdfmark
EEND/F0 12/Courier@0 SF(2.1. Semantics)56.692 288.944 Q
(The multipart/email media type denotes an extensible wrapper which)
78.292 312.944 Q
(contains a message, separate transport markings, and may contain)78.292
324.944 Q(ancillary information.)78.292 336.944 Q
(It can be thought of as roughly equivalent to)14.4 E
(the "envelope" of a physical message.)78.292 348.944 Q
(Unlike many physical)14.4 E
(envelopes, the multipart/email wrapper has separate compartments for)
78.292 360.944 Q
(the originator's message, routing and filing instructions, transport)
78.292 372.944 Q(markings, classification schemes, etc.)78.292 384.944 Q
(Also unlike most physical)14.4 E
(messages, the wrapper provides for multiple representations of)78.292
396.944 Q
(originator content, providing a backward\255compatible migration path)
78.292 408.944 Q(which may be used to resolve limitations of)78.292
420.944 Q
(RFC 561/680/724/733/822/2822 Internet message format [I2.RFC561],)
78.292 432.944 Q
([I3.RFC680], [I4.RFC724], [I5.RFC733], [I6.STD11], [I7.RFC2822].)78.292
444.944 Q 56.692 468.944 EBEGIN
[/Title (2.2. Syntax) /Dest (S2.2) /OUT pdfmark
EEND 56.692 468.944 EBEGIN
[/Dest (S2.2) /Page 3 /View [ /FitH 360 ] /DEST pdfmark
EEND/F0 12/Courier@0 SF(2.2. Syntax)56.692 468.944 Q
(The general syntax follows multipart media syntax as specified in)
78.292 492.944 Q(section 5.1.1 of [N2.RFC2046].)78.292 504.944 Q
(There must be at least one body part,)14.4 E
(and exactly one body part MUST have type multipart/alternative.)78.292
516.944 Q(That)14.4 E
(multipart/alternative part MUST itself contain at least one body part)
78.292 528.944 Q
(and all body parts within that multipart/alternative part must have)
78.292 540.944 Q(message type.)78.292 552.944 Q
(An example of a simple case would have a single part)14.4 E
(of type message/rfc822.)78.292 564.944 Q(Each body part within the)14.4
E(multipart/alternative part contains end\255to\255end, user\255to\255u\
ser content)78.292 576.944 Q
(formatted according to the rules of the corresponding message type.)
78.292 588.944 Q
(As specified in [N2.RFC2046] section 5.1.4, order of parts within the)
78.292 600.944 Q(multipart/alternative part is significant.)78.292
612.944 Q(Order of body parts)14.4 E
(within the multipart/email wrapper is not significant.)78.292 624.944 Q
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/F0 12/Courier@0 SF 14.4(Internet\255Draft EMAIL)20.182 84.944 R
(Part 2: Syntax, Semantics, Media)7.2 E(July 2005)57.6 E
(Aside from the required multipart/alternative composite media type)
41.782 108.944 Q
(containing the end\255to\255end message format\(s\), other media types)
41.782 120.944 Q
(enclosed in the multipart/email wrapper comprise ancillary data.)41.782
132.944 Q(It)14.4 E
(is RECOMMENDED that media types defined to hold ancillary data be)
41.782 144.944 Q(defined as subtypes of the message top\255level MIME t\
ype to permit both)41.782 156.944 Q
(structured \(as fields\) and unstructured content.)41.782 168.944 Q
(Some initial types)14.4 E
(will be proposed in a companion document [TBD].)41.782 180.944 Q
(The multipart/email)14.4 E
(wrapper SHOULD NOT directly contain a component of type)41.782 192.944
Q(message/rfc822; end\255to\255end message content is wrapped in the)
41.782 204.944 Q
(multipart/alternative component to provide extensibility.)41.782
216.944 Q
(Using the notation given in [I8.Intro], the simple case example has)
41.782 240.944 Q(the following structure:)41.782 252.944 Q
(multipart/email 0)41.782 276.944 Q(multipart/alternative 1)48.982
288.944 Q(message/rfc822 1.1)56.182 300.944 Q(text/plain 1.1.1)63.382
312.944 Q(close delimiter 1)48.982 324.944 Q(close delimiter 0)41.782
336.944 Q
(Note that the message/rfc822 part within the multipart/alternative)
41.782 360.944 Q
(part need not be a simple message; it MAY be a complex MIME message.)
41.782 372.944 Q
(An OpenPGP [I9.RFC3156] signed and encrypted message body with)41.782
384.944 Q
(ancillary information generated by the originator's MUA could have)
41.782 396.944 Q(the following structure:)41.782 408.944 Q
(multipart/email 0)41.782 432.944 Q(multipart/alternative 1)48.982
444.944 Q(message/rfc822 1.1)56.182 456.944 Q(multipart/encrypted 1.1.1)
63.382 468.944 Q(application/pgp-encrypted 1.1.1.1)70.582 480.944 Q
(application/octet-stream 1.1.1.2)70.582 492.944 Q
(close delimiter 1.1.1)63.382 504.944 Q(close delimiter 1)48.982 516.944
Q(message/omua 2)48.982 528.944 Q(close delimiter 0)41.782 540.944 Q
(In the example above, the message body is encrypted, but the header)
41.782 564.944 Q(is not.)41.782 576.944 Q
(That may leave some information accessible to an)14.4 E 7.2
(eavesdropper. Alternatively,)41.782 588.944 R
(the encrypted content could include an)7.2 E
(entire message/rfc822 media type object, and the plaintext header)
41.782 600.944 Q(could consist of placeholder fields.)41.782 612.944 Q
(Note that details of the)14.4 E
(signing and encryption operations are not specified by this media)
41.782 624.944 Q(type, and may have vulnerabilities.)41.782 636.944 Q
(The media type provides a)14.4 E(mechanism to isolate the end\255to\
\255end content from signature\255breaking)41.782 648.944 Q
(operations performed by transport agents; by itself the media type)
41.782 660.944 Q
(provides no guarantees of security or privacy for that content, nor)
41.782 672.944 Q
(can it protect against damage caused by non\255compliant transport or)
41.782 684.944 Q(transport\255related agents.)41.782 696.944 Q
(In particular, the layered aspect of)14.4 E
(signing and encryption used by some mechanisms leaves content open to)
41.782 708.944 Q
(vulnerabilities such as signature replacement, eavesdropping, and/or)
41.782 720.944 Q(surreptitious forwarding.)41.782 732.944 Q 129.6
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EBEGIN
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EEND/F0 12/Courier@0 SF(2.3. Media Type Registration)56.692 108.944 Q
(Type name: multipart)78.292 132.944 Q(Subtype name: email)78.292
156.944 Q(Required parameters:)78.292 180.944 Q
(boundary: per [N2.RFC2046] section 5.1.1)99.892 204.944 Q
(version: An unsigned decimal integer number indicating the version)
99.892 228.944 Q(of the media type specification.)135.892 240.944 Q
(The value corresponding to)14.4 E(this specification is 1.)135.892
252.944 Q 7.2(Av)121.492 276.944 S
(ersion value change requires a new specification.)-7.2 E(A)14.4 E
(specification revision entailing any of the following means)121.492
288.944 Q(that a new version is REQUIRED:)121.492 300.944 Q 16.8<8361>
121.492 324.944 S(ddition of a mandatory part)-16.8 E 16.8<8373>121.492
348.944 S(pecification such that existence or content of some part)-16.8
E(affects processing or display of the message as a whole or)145.492
360.944 Q(of any part other than the specific part whose existence or)
145.492 372.944 Q(content is concerned)145.492 384.944 Q 7.2(Am)121.492
408.944 S(edia type definition suitable as an optional part does not)
-7.2 E(require a new version of multipart/email unless the second item)
121.492 420.944 Q(above applies.)121.492 432.944 Q
(Once a mandatory part is added to the specification \(with a)121.492
456.944 Q
(corresponding new version\), that part MUST NOT subsequently be)121.492
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(That prohibition is necessary to ensure)14.4 E
(backward compatibility of new versions.)121.492 492.944 Q
(Consequently, addition)14.4 E
(of a mandatory part is a change that should not be made)121.492 504.944
Q(lightly.)121.492 516.944 Q(Optional parameters: none)78.292 540.944 Q
(Encoding considerations: Encoding MUST be one of 7bit, 8bit, or)78.292
564.944 Q(binary per section 6.4 of [N3.RFC2045] and section 5.1 of)
114.292 576.944 Q 7.2([N2.RFC2046]. Encoding)114.292 588.944 R
(specified via a)7.2 E
(Content\255Transfer\255Encoding field MUST be consistent with enclosed)
114.292 600.944 Q
(media type domains and with the [N3.RFC2045] and [N2.RFC2046])114.292
612.944 Q(requirements noted above.)114.292 624.944 Q
(Restrictions on usage: none)78.292 648.944 Q
(Security considerations: Making it easier for users and applications)
78.292 672.944 Q
(to find specific information necessarily makes it easier for)114.292
684.944 Q(attackers to find such information.)114.292 696.944 Q
(Separating the end\255to\255end message information from transport)
99.892 720.944 Q
(markings facilitates digital signing and/or encryption of that)99.892
732.944 Q(communication, including header information, impeding)99.892
744.944 Q 129.6(Lilly Expires)56.692 768.944 R(January 10, 2006)7.2 E
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/F0 12/Courier@0 SF 14.4(Internet\255Draft EMAIL)20.182 84.944 R
(Part 2: Syntax, Semantics, Media)7.2 E(July 2005)57.6 E
(eavesdropping and similar attacks.)63.382 108.944 Q(It facilitates)14.4
E(confidentiality, data integrity, and data origin authentication)63.382
120.944 Q(when used with message security mechanisms applied to the)
63.382 132.944 Q(end\255to\255end message contained within the wrapper.)
63.382 144.944 Q
(This media type does not address security issues such as)63.382 168.944
Q(inappropriate usage and denial of service.)63.382 180.944 Q
(Content could be moved from one wrapper to another, or unsigned)63.382
204.944 Q
(content in the wrapper could be added, elided, or modified by an)63.382
216.944 Q 7.2(attacker. Specification)63.382 228.944 R
(of optional content formats SHOULD make)7.2 E
(provision for signing and/or encryption of that content if)63.382
240.944 Q(security or privacy are concerns.)63.382 252.944 Q
(Interoperability considerations: Because the format of an EMAIL)41.782
276.944 Q
(message is a MIME object, it can be handled by MIME\255capable user)
77.782 288.944 Q
(agents, or by non\255MIME\255aware agents via an external package such)
77.782 300.944 Q(as metamail [I10.Metamail].)77.782 312.944 Q
(Initially, many agents will not)14.4 E
(recognize the multipart/email type, and will treat it as)77.782 324.944
Q(multipart/mixed in accordance with [N2.RFC2046] section 5.1.3.)77.782
336.944 Q(That is reasonable, since the multipart/email type is in fact)
77.782 348.944 Q
(treated like multipart/mixed, but carries the semantics of a)77.782
360.944 Q
(wrapped message and has specific message\255related specifications.)
77.782 372.944 Q 7.2(Aw)77.782 384.944 S
(rapped message of type message/rfc822 contained within the)-7.2 E
(multipart/alternative wrapper will be recognized \(some existing)77.782
396.944 Q(UAs, tested prior to publication of the initial draft of this)
77.782 408.944 Q
(document, display the message inline, others may require that)77.782
420.944 Q(the MIME part be selected\).)77.782 432.944 Q
(Alternative new message subtypes,)14.4 E
(both for compartmentalizing ancillary data and for alternative)77.782
444.944 Q
(end\255to\255end message content formatting which are unrecognized are)
77.782 456.944 Q
(treated as equivalent to application/octet\255stream, per)77.782
468.944 Q([N2.RFC2046] section 5.2.4.)77.782 480.944 Q
(Some UAs in fact present that)14.4 E
(content inline, although that is non\255conforming behavior)77.782
492.944 Q([I11.RFC2049] \(section 2, paragraph labeled "\(4\)"\).)77.782
504.944 Q
(These characteristics \(appropriate handling of the wrapper, the)63.382
528.944 Q
(embedded multipart/alternative, and the internal message/rfc822)63.382
540.944 Q
(message\) are necessary and sufficient to meet the goal of backward)
63.382 552.944 Q
(compatibility for the purpose of end\255to\255end communications.)
63.382 564.944 Q
(Handling of ancillary information will progress at a rate)63.382
588.944 Q
(dependent on the perceived need for such handling; likewise for)63.382
600.944 Q
(development, deployment, and recognition of alternative message)63.382
612.944 Q(content formats \(with message/rfc822 retained in the)63.382
624.944 Q(multipart/alternative wrapper for the foreseeable future as a)
63.382 636.944 Q(fallback for legacy UAs\).)63.382 648.944 Q
(In the meantime, separation of such)14.4 E(ancillary data and transpor\
t markings from the end\255to\255end message)63.382 660.944 Q(content e\
nables end\255to\255end authentication of that message content)63.382
672.944 Q
(without invalidation of digital signatures \(because transport,)63.382
684.944 Q
(including gateways, is prohibited from modifying the MIME\255wrapped)
63.382 696.944 Q
(end\255to\255end message per [N2.RFC2046] section 5.2\).)63.382 708.944
Q(That feature)14.4 E
(alone may be instrumental in reduction of the amount of)63.382 720.944
Q(messaging\255based fraud which is rampant at the time of writing of)
63.382 732.944 Q(this memo.)63.382 744.944 Q 129.6(Lilly Expires)20.182
768.944 R(January 10, 2006)7.2 E([Page 6])115.2 E 0 Cg EP
%%Page: 7 7
%%BeginPageSetup
BP
%%EndPageSetup
/F0 12/Courier@0 SF 14.4(Internet\255Draft EMAIL)56.692 84.944 R
(Part 2: Syntax, Semantics, Media)7.2 E(July 2005)57.6 E
(Published specification: This document.)78.292 108.944 Q
(Applications which use this media type: Any applications using MIME)
78.292 132.944 Q(and the Internet Message Format)114.292 144.944 Q
(Additional information:)78.292 168.944 Q(Magic number\(s\): None)99.892
192.944 Q
(File extension\(s\): Files do not require any specific "extension")
99.892 216.944 Q(or suffix.)135.892 228.944 Q
(Many are in use as a convenience for mechanized)14.4 E
(processing of files.)135.892 240.944 Q
(File names are orthogonal to the nature)14.4 E(of the content.)135.892
252.944 Q(In particular, while a file name or a)14.4 E
(component of a name may be useful in some types of automated)135.892
264.944 Q(processing of files, the name or component might not be)
135.892 276.944 Q(capable of indicating subtleties.)135.892 288.944 Q
(This media type SHOULD NOT)14.4 E
(be assigned a relationship with any file "extension" where)135.892
300.944 Q(content may be untrusted unless there is provision for human)
135.892 312.944 Q
(judgment which may be used to override that relationship for)135.892
324.944 Q(individual files.)135.892 336.944 Q
(Where appropriate, a filename MAY be)14.4 E
(suggested by a suitable mechanism such as the one specified)135.892
348.944 Q(in [I12.RFC2183] as amended by [I13.RFC2231] and .)135.892
360.944 Q(Macintosh File Type Code\(s\): unknown)99.892 384.944 Q
(Person & email address to contact for further information:)78.292
408.944 Q(Bruce Lilly)114.292 420.944 Q(blilly@erols.com)114.292 432.944
Q(Intended usage: COMMON)78.292 456.944 Q
(Author/Change controller: IESG)78.292 480.944 Q 56.692 504.944 EBEGIN
[/Title (3. Message/email) /Dest (S3.1) /OUT pdfmark
EEND 56.692 504.944 EBEGIN
[/Dest (S3.1) /Page 7 /View [ /FitH 324 ] /DEST pdfmark
EEND/F0 12/Courier@0 SF(3. Message/email)56.692 504.944 Q 56.692 528.944
EBEGIN
[/Title (3.1. Semantics) /Dest (S3.1) /OUT pdfmark
EEND 56.692 528.944 EBEGIN
[/Dest (S3.1) /Page 7 /View [ /FitH 300 ] /DEST pdfmark
EEND/F0 12/Courier@0 SF(3.1. Semantics)56.692 528.944 Q
(The message/email media type holds a complete message consisting of a)
78.292 552.944 Q
(MIME\255conforming message header and a body type containing a)78.292
564.944 Q(multipart/email composite media type.)78.292 576.944 Q
(It is similar to)14.4 E
(message/rfc822 but has the added semantics of the extensible format.)
78.292 588.944 Q 56.692 612.944 EBEGIN
[/Title (3.2. Syntax) /Dest (S3.2) /OUT pdfmark
EEND 56.692 612.944 EBEGIN
[/Dest (S3.2) /Page 7 /View [ /FitH 216 ] /DEST pdfmark
EEND/F0 12/Courier@0 SF(3.2. Syntax)56.692 612.944 Q
(Overall syntax is that of MIME message types and is similar to that)
78.292 636.944 Q(of message/rfc822 with a composite MIME body.)78.292
648.944 Q(Note that due to)14.4 E
(optional extension parts, the content might require 8bit or binary)
78.292 660.944 Q(transport.)78.292 672.944 Q(3.2.1. Usage)56.692 696.944
Q(The message/email media type may be used in the same places as)78.292
720.944 Q
(message/rfc822 provided there are no conflicts which would prevent)
78.292 732.944 Q(such use.)78.292 744.944 Q
(In particular, it may be used as an alternative to)14.4 E 129.6
(Lilly Expires)56.692 768.944 R(January 10, 2006)7.2 E([Page 7])115.2 E
0 Cg EP
%%Page: 8 8
%%BeginPageSetup
BP
%%EndPageSetup
/F0 12/Courier@0 SF 14.4(Internet\255Draft EMAIL)20.182 84.944 R
(Part 2: Syntax, Semantics, Media)7.2 E(July 2005)57.6 E
(message/rfc822 in a multipart/report media type [N4.RFC3462] as used)
41.782 108.944 Q
(by DSNs [I14.RFC3464], MDNs [I15.RFC3798], and MSTNs [I16.RFC3886].)
41.782 120.944 Q
(For backward compatibility, a message/email media type which meets)
41.782 132.944 Q
(the syntax of message/rfc822 MAY be relabeled as message/rfc822 when)
41.782 144.944 Q(used in a multipart/report composite media type.)41.782
156.944 Q 20.182 180.944 EBEGIN
[/Title (3.3. Media Type Registration) /Dest (S3.3) /OUT pdfmark
EEND 20.182 180.944 EBEGIN
[/Dest (S3.3) /Page 8 /View [ /FitH 648 ] /DEST pdfmark
EEND/F0 12/Courier@0 SF(3.3. Media Type Registration)20.182 180.944 Q
(Type name: message)41.782 204.944 Q(Subtype name: email)41.782 228.944
Q(Required parameters:)41.782 252.944 Q
(version: An unsigned decimal integer number indicating the version)
63.382 276.944 Q(of the media type specification.)99.382 288.944 Q
(The value corresponding to)14.4 E(this specification is 1.)99.382
300.944 Q(Optional parameters: none)41.782 324.944 Q
(Encoding considerations: Encoding MUST be one of 7bit, 8bit, or)41.782
348.944 Q(binary per section 6.4 of [N3.RFC2045] and section 5.1 of)
77.782 360.944 Q([N2.RFC2046] .)77.782 372.944 Q
(Encoding specified via a)14.4 E
(Content\255Transfer\255Encoding field MUST be consistent with enclosed)
77.782 384.944 Q
(media type domains and with the [N3.RFC2045] and [N2.RFC2046])77.782
396.944 Q(requirements noted above.)77.782 408.944 Q
(Restrictions on usage: none)41.782 432.944 Q
(Security considerations: As with any message media type, content can)
41.782 456.944 Q(be forged or replaced via a man\255in\255the-middle.)
77.782 468.944 Q(Security)14.4 E
(multiparts [I17.RFC1847] may be used to provide some protection.)77.782
480.944 Q
(Interoperability considerations: This media type will be treated as)
41.782 504.944 Q
(application/octet-stream by MIME\255conforming [I11.RFC2049])77.782
516.944 Q(implementations which do not recognize the media subtype.)
77.782 528.944 Q(In)14.4 E
(many cases, the content can be saved and treated as)77.782 540.944 Q
(message/rfc822 with MIME content.)77.782 552.944 Q
(Published specification: This document.)41.782 576.944 Q
(Applications which use this media type: Any applications using MIME)
41.782 600.944 Q(and the Internet Message Format)77.782 612.944 Q
(Additional information:)41.782 636.944 Q(Magic number\(s\): None)63.382
660.944 Q
(File extension\(s\): Files do not require any specific "extension")
63.382 684.944 Q(or suffix.)99.382 696.944 Q
(Many are in use as a convenience for mechanized)14.4 E
(processing of files.)99.382 708.944 Q
(File names are orthogonal to the nature)14.4 E(of the content.)99.382
720.944 Q(In particular, while a file name or a)14.4 E
(component of a name may be useful in some types of automated)99.382
732.944 Q(processing of files, the name or component might not be)99.382
744.944 Q 129.6(Lilly Expires)20.182 768.944 R(January 10, 2006)7.2 E
([Page 8])115.2 E 0 Cg EP
%%Page: 9 9
%%BeginPageSetup
BP
%%EndPageSetup
/F0 12/Courier@0 SF 14.4(Internet\255Draft EMAIL)56.692 84.944 R
(Part 2: Syntax, Semantics, Media)7.2 E(July 2005)57.6 E
(capable of indicating subtleties.)135.892 108.944 Q
(This media type SHOULD NOT)14.4 E
(be assigned a relationship with any file "extension" where)135.892
120.944 Q(content may be untrusted unless there is provision for human)
135.892 132.944 Q
(judgment which may be used to override that relationship for)135.892
144.944 Q(individual files.)135.892 156.944 Q
(Where appropriate, a filename MAY be)14.4 E
(suggested by a suitable mechanism such as the one specified)135.892
168.944 Q(in [I18.RFC2183] as amended by [I13.RFC2231] and .)135.892
180.944 Q(Macintosh File Type Code\(s\): unknown)99.892 204.944 Q
(Person & email address to contact for further information:)78.292
228.944 Q(Bruce Lilly)114.292 240.944 Q(blilly@erols.com)114.292 252.944
Q(Intended usage: COMMON)78.292 276.944 Q
(Author/Change controller: IESG)78.292 300.944 Q 56.692 324.944 EBEGIN
[/Title (4. Security Considerations) /Dest (S4) /OUT pdfmark
EEND 56.692 324.944 EBEGIN
[/Dest (S4) /Page 9 /View [ /FitH 504 ] /DEST pdfmark
EEND/F0 12/Courier@0 SF(4. Security Considerations)56.692 324.944 Q
(Security considerations relevant to media types are discussed in the)
78.292 348.944 Q(media type registration form data in this memo.)78.292
360.944 Q 56.692 384.944 EBEGIN
[/Title (5. Internationalization Considerations) /Dest (S5) /OUT pdfmark
EEND 56.692 384.944 EBEGIN
[/Dest (S5) /Page 9 /View [ /FitH 444 ] /DEST pdfmark
EEND/F0 12/Courier@0 SF(5. Internationalization Considerations)56.692
384.944 Q(This memo raises no new internationalization considerations.)
78.292 408.944 Q(It)14.4 E
(identifies some internationalization issues in general terms, and)
78.292 420.944 Q
(discusses an approach to those issues, also in general terms.)78.292
432.944 Q 56.692 456.944 EBEGIN
[/Title (6. IANA Considerations) /Dest (S6) /OUT pdfmark
EEND 56.692 456.944 EBEGIN
[/Dest (S6) /Page 9 /View [ /FitH 372 ] /DEST pdfmark
EEND/F0 12/Courier@0 SF(6. IANA Considerations)56.692 456.944 Q
(Upon approval by the IESG, IANA SHALL register the media types)78.292
480.944 Q(defined in this document.)78.292 492.944 Q 56.692 516.944
EBEGIN
[/Title (Appendix A. Disclaimers) /Dest (SA) /OUT pdfmark
EEND 56.692 516.944 EBEGIN
[/Dest (SA) /Page 9 /View [ /FitH 312 ] /DEST pdfmark
EEND/F0 12/Courier@0 SF(Appendix A. Disclaimers)56.692 516.944 Q
(This document has exactly one \(1\) author.)78.292 540.944 Q
(In spite of the fact that the author's given name may also be the)
78.292 564.944 Q
(surname of other individuals, and the fact that the author's surname)
78.292 576.944 Q
(may also be a given name for some females, the author is, and has)
78.292 588.944 Q(always been, male.)78.292 600.944 Q
(The presence of "or she", "/SHE", "each", "their", and "authors")78.292
624.944 Q
(\(plural\) in the boilerplate sections of this document is irrelevant.)
78.292 636.944 Q
(As noted in the "Status of this Memo" section, this document is an)
78.292 660.944 Q(Internet\255Draft, and as such is a "work in progress"\
, not a standard.)78.292 672.944 Q
(Reference to this document's contents as "this standard" in the)78.292
684.944 Q(boilerplate are inappropriate.)78.292 696.944 Q
(The author of this document is not responsible for the boilerplate)
78.292 720.944 Q(text.)78.292 732.944 Q 129.6(Lilly Expires)56.692
768.944 R(January 10, 2006)7.2 E([Page 9])115.2 E 0 Cg EP
%%Page: 10 10
%%BeginPageSetup
BP
%%EndPageSetup
/F0 12/Courier@0 SF 14.4(Internet\255Draft EMAIL)20.182 84.944 R
(Part 2: Syntax, Semantics, Media)7.2 E(July 2005)57.6 E
(Comments regarding the silliness, lack of accuracy, and lack of)41.782
108.944 Q
(precision of the boilerplate text should be directed to the IESG, not)
41.782 120.944 Q(to the author.)41.782 132.944 Q(Normative References)
20.182 156.944 Q([N1.BCP14])41.782 180.944 Q 135.382 180.944 EBEGIN
[/Dest (N1) /DEST pdfmark
EEND/F0 12/Courier@0 SF
(Bradner, S., "Key words for use in RFCs to Indicate)135.382 180.944 Q
(Requirement Levels", BCP 14, RFC 2119, March 1997.)135.382 192.944 Q
([N2.RFC2046])41.782 216.944 Q 135.382 216.944 EBEGIN
[/Dest (N2) /DEST pdfmark
EEND/F0 12/Courier@0 SF
(Freed, N. and N. Borenstein, "Multipurpose Internet Mail)135.382
216.944 Q(Extensions \(MIME\) Part Two: Media Types", RFC 2046,)135.382
228.944 Q(November 1996.)135.382 240.944 Q([N3.RFC2045])41.782 264.944 Q
135.382 264.944 EBEGIN
[/Dest (N3) /DEST pdfmark
EEND/F0 12/Courier@0 SF
(Freed, N. and N. Borenstein, "Multipurpose Internet Mail)135.382
264.944 Q(Extensions \(MIME\) Part One: Format of Internet Message)
135.382 276.944 Q(Bodies", RFC 2045, November 1996.)135.382 288.944 Q
([N4.RFC3462])41.782 312.944 Q 135.382 312.944 EBEGIN
[/Dest (N4) /DEST pdfmark
EEND/F0 12/Courier@0 SF
(Vaudreuil, G., "The Multipart/Report Content Type for)135.382 312.944 Q
(the Reporting of Mail System Administrative Messages",)135.382 324.944
Q(RFC 3462, January 2003.)135.382 336.944 Q(Informative References)
20.182 360.944 Q([I1.MediaReg])41.782 384.944 Q 149.782 384.944 EBEGIN
[/Dest (I1) /DEST pdfmark
EEND/F0 12/Courier@0 SF
(Freed, N. and J. Klensin, "Media Type Specifications)149.782 384.944 Q
(and Registration Procedures")149.782 396.944 Q
(\(draft\255freed\255media\255type\255reg\25504.txt\), April 2005.)
149.782 408.944 Q([I2.RFC561])41.782 432.944 Q 149.782 432.944 EBEGIN
[/Dest (I2) /DEST pdfmark
EEND/F0 12/Courier@0 SF
(Bhushan, A., Pogran, K., Tomlinson, R., and J. White,)149.782 432.944 Q
("Standardizing Network Mail Headers", RFC 561,)149.782 444.944 Q
(September 1973.)149.782 456.944 Q([I3.RFC680])41.782 480.944 Q 149.782
480.944 EBEGIN
[/Dest (I3) /DEST pdfmark
EEND/F0 12/Courier@0 SF
(Myer, T. and D. Henderson, "Message Transmission)149.782 480.944 Q
(Protocol", RFC 680, April 1975.)149.782 492.944 Q([I4.RFC724])41.782
516.944 Q 149.782 516.944 EBEGIN
[/Dest (I4) /DEST pdfmark
EEND/F0 12/Courier@0 SF
(Crocker, D., Pogran, K., Vittal, J., and D. Henderson,)149.782 516.944
Q("Proposed official standard for the format of ARPA)149.782 528.944 Q
(Network messages", RFC 724, May 1977.)149.782 540.944 Q([I5.RFC733])
41.782 564.944 Q 149.782 564.944 EBEGIN
[/Dest (I5) /DEST pdfmark
EEND/F0 12/Courier@0 SF
(Crocker, D., Vittal, J., Pogran, K., and D. Henderson,)149.782 564.944
Q("Standard for the format of ARPA network text)149.782 576.944 Q
(messages", RFC 733, November 1977.)149.782 588.944 Q([I6.STD11])41.782
612.944 Q 149.782 612.944 EBEGIN
[/Dest (I6) /DEST pdfmark
EEND/F0 12/Courier@0 SF
(Crocker, D., "Standard for the format of ARPA Internet)149.782 612.944
Q(text messages", STD 11, RFC 822, August 1982.)149.782 624.944 Q
([I7.RFC2822])41.782 648.944 Q 149.782 648.944 EBEGIN
[/Dest (I7) /DEST pdfmark
EEND/F0 12/Courier@0 SF
(Resnick, P., "Internet Message Format", RFC 2822,)149.782 648.944 Q
(April 2001.)149.782 660.944 Q([I8.Intro])41.782 684.944 Q 149.782
684.944 EBEGIN
[/Dest (I8) /DEST pdfmark
EEND/F0 12/Courier@0 SF
(Lilly, B., "Extensible Message Application Interchange)149.782 684.944
Q(Language \(EMAIL\) -- Part One: Introduction and)149.782 696.944 Q
(Overview",)149.782 708.944 Q
(\(draft\255lilly\255extensible\255message\255format\255p1\25500.txt\),)
149.782 720.944 Q(June 2005.)149.782 732.944 Q 129.6(Lilly Expires)
20.182 768.944 R(January 10, 2006)7.2 E([Page 10])108 E 0 Cg EP
%%Page: 11 11
%%BeginPageSetup
BP
%%EndPageSetup
/F0 12/Courier@0 SF 14.4(Internet\255Draft EMAIL)56.692 84.944 R
(Part 2: Syntax, Semantics, Media)7.2 E(July 2005)57.6 E([I9.RFC3156])
78.292 108.944 Q 186.292 108.944 EBEGIN
[/Dest (I9) /DEST pdfmark
EEND/F0 12/Courier@0 SF(Elkins, M., Del Torto, D., Levien, R., and T.)
186.292 108.944 Q(Roessler, "MIME Security with OpenPGP", RFC 3156,)
186.292 120.944 Q(August 2001.)186.292 132.944 Q([I10.Metamail])78.292
156.944 Q 186.292 156.944 EBEGIN
[/Dest (I10) /DEST pdfmark
EEND/F0 12/Courier@0 SF(http://guppylake.com/~nsb/metamail/mm2.7.tar.Z)
186.292 156.944 Q([I11.RFC2049])78.292 180.944 Q 186.292 180.944 EBEGIN
[/Dest (I11) /DEST pdfmark
EEND/F0 12/Courier@0 SF
(Freed, N. and N. Borenstein, "Multipurpose Internet)186.292 180.944 Q
(Mail Extensions \(MIME\) Part Five: Conformance Criteria)186.292
192.944 Q(and Examples", RFC 2049, November 1996.)186.292 204.944 Q
([I12.RFC2183])78.292 228.944 Q 186.292 228.944 EBEGIN
[/Dest (I12) /DEST pdfmark
EEND/F0 12/Courier@0 SF
(Troost, R., Dorner, S., and K. Moore, "Communicating)186.292 228.944 Q
(Presentation Information in Internet Messages: The)186.292 240.944 Q
(Content\255Disposition Header Field", RFC 2183, August)186.292 252.944
Q(1997.)186.292 264.944 Q([I13.RFC2231])78.292 288.944 Q 186.292 288.944
EBEGIN
[/Dest (I13) /DEST pdfmark
EEND/F0 12/Courier@0 SF
(Freed, N. and K. Moore, "MIME Parameter Value and)186.292 288.944 Q
(Encoded Word Extensions: Character Sets, Languages,)186.292 300.944 Q
(and Continuations", RFC 2231, November 1997.)186.292 312.944 Q
([I14.RFC3464])78.292 336.944 Q 186.292 336.944 EBEGIN
[/Dest (I14) /DEST pdfmark
EEND/F0 12/Courier@0 SF
(Moore, K. and G. Vaudreuil, "An Extensible Message)186.292 336.944 Q
(Format for Delivery Status Notifications", RFC 3464,)186.292 348.944 Q
(January 2003.)186.292 360.944 Q([I15.RFC3798])78.292 384.944 Q 186.292
384.944 EBEGIN
[/Dest (I15) /DEST pdfmark
EEND/F0 12/Courier@0 SF
(Hansen, T. and G. Vaudreuil, "Message Disposition)186.292 384.944 Q
(Notification", RFC 3798, May 2004.)186.292 396.944 Q([I16.RFC3886])
78.292 420.944 Q 186.292 420.944 EBEGIN
[/Dest (I16) /DEST pdfmark
EEND/F0 12/Courier@0 SF
(Allman, E., "An Extensible Message Format for Message)186.292 420.944 Q
(Tracking Responses", RFC 3886, September 2004.)186.292 432.944 Q
([I17.RFC1847])78.292 456.944 Q 186.292 456.944 EBEGIN
[/Dest (I17) /DEST pdfmark
EEND/F0 12/Courier@0 SF
(Galvin, J., Murphy, S., Crocker, S., and N. Freed,)186.292 456.944 Q
("Security Multiparts for MIME: Multipart/Signed and)186.292 468.944 Q
(Multipart/Encrypted", RFC 1847, October 1995.)186.292 480.944 Q
([I18.RFC2183])78.292 504.944 Q 186.292 504.944 EBEGIN
[/Dest (I18) /DEST pdfmark
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(Troost, R., Dorner, S., and K. Moore, "Communicating)186.292 504.944 Q
(Presentation Information in Internet Messages: The)186.292 516.944 Q
(Content\255Disposition Header Field", RFC 2183, August)186.292 528.944
Q(1997.)186.292 540.944 Q(Author's Address)56.692 564.944 Q(Bruce Lilly)
78.292 588.944 Q(Email: blilly@erols.com)78.292 612.944 Q
(Full Copyright Statement)56.692 636.944 Q 7.2(Copyright \251 The)78.292
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(This document is subject to the rights, licenses and restrictions)
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(contained in BCP 78, and except as set forth therein, the authors)
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(This document and the information contained herein are provided on an)
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("AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS)
78.292 744.944 Q 129.6(Lilly Expires)56.692 768.944 R(January 10, 2006)
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(Part 2: Syntax, Semantics, Media)7.2 E(July 2005)57.6 E
(OR IS SPONSORED BY \(IF ANY\), THE INTERNET SOCIETY AND THE INTERNET)
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(ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED,)
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(might or might not be available; nor does it represent that it has)
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(made any independent effort to identify any such rights.)41.782 264.944
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(on the procedures with respect to rights in RFC documents can be)41.782
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(attempt made to obtain a general license or permission for the use of)
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(such proprietary rights by implementers or users of this)41.782 348.944
Q(specification can be obtained from the IETF on\255line IPR repository\
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(The IETF invites any interested party to bring to its attention any)
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(copyrights, patents or patent applications, or other proprietary)41.782
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(rights that may cover technology that may be required to implement)
41.782 420.944 Q(this standard.)41.782 432.944 Q
(Please address the information to the IETF at)14.4 E
(ietf\255ipr@ietf.org.)41.782 444.944 Q(Acknowledgment)20.182 468.944 Q
(Funding for the RFC Editor function is currently provided by the)41.782
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