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Mail Parameters Connected: An Internet Encyclopedia
Mail Parameters

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Mail Parameters

Mail Parameters


MAIL ENCODING HEADER FIELD KEYWORDS


[RFC1505] specifies an initial list of keywords for the experimental
encoding header field (EHF-MAIL), and provides that additional
keywords may be registered with the IANA.


Keyword         Description                             Reference
_______         ___________                          ____________

EDIFACT         EDIFACT format                          [RFC1505]
EDI-X12         EDI X12 format                         [ANSI-X12]
EVFU            FORTRAN format                          [RFC1505]
FS              File System format                      [RFC1505]
Hex             Hex binary format                       [RFC1505]
LZJU90          LZJU90 format                           [RFC1505]
LZW             LZW format                              [RFC1505]
Message         Encapsulated Message                     [RFC822] 
PEM, PEM-Clear  Privacy Enhanced Mail                   [RFC1421]
PGP             Pretty Good Privacy                     [RFC1505]
Postscript      Postscript format                    [POSTSCRIPT]
Shar            Shell Archive format                    [RFC1505]
Signature       Signature                               [RFC1505]
Tar             Tar format                              [RFC1505]
Text            Text                                   [IS-10646]
uuencode        uuencode format                         [RFC1505]
URL             external URL-reference                  [RFC1505]



MAIL ENCRYPTION TYPES


[RFC822] specifies that Encryption Types for mail may be assigned.
There are currently no RFC 822 encryption types assigned.  Please use
instead the Mail Privacy procedures defined in [RFC1421, RFC1422,
RFC1423].


SMTP SERVICE EXTENSIONS

The Simple Mail Transfer Protocol [RFC821] specifies a set of commands
or services for mail transfer.  A general procedure for extending the
set of services is defined in [STD11,RFC1869].  The set of service
extensions is listed here.

The service extensions are identified by keywords sent from the server
to the client in response to the EHLO command.

Keywords	Description				 Reference
------------    --------------------------------         ---------
SEND		Send as mail				  [RFC821]
SOML		Send as mail or terminal		  [RFC821]
SAML		Send as mail and terminal		  [RFC821]
EXPN		Expand the mailing list			  [RFC821]
HELP		Supply helpful information		  [RFC821]
TURN		Turn the operation around		  [RFC821]
8BITMIME	Use 8-bit data				 [RFC1652]
SIZE		Message size declaration		 [RFC1870]
VERB		Verbose		                     [Eric Allman]
ONEX		One message transaction only	     [Eric Allman]
CHUNKING        Chunking                                 [RFC1830]
BINARYMIME      Binary MIME                              [RFC1830]
PIPELINING      Command Pipelining                       [RFC1854]
DSN             Delivery Status Notification             [RFC1891]

Some of these keywords have parameters.  These are listed here (those
keywords not listed here have no parameters).

Service Ext      EHLO Keyword   Parameters               Reference
-----------      ------------   -----------              ---------
Size		 SIZE            number                  [RFC1870]


MAIL SYSTEM NAMES and ADDRESS TYPES

In some places, an identification of other mail systems is used.

One of these is in "The COSINE and Internet X.500 Schema" (section
9.3.18) [RFC1274].  The mail system names listed here are used as the
legal values in that schema under the "otherMailbox" attribute
"mailboxType" type (which must be a PrintableString).

Another place is in "Mapping between X.400(1988) / ISO 10021 and RFC
822" (section 4.2.2) [RFC1327].  The names listed here are used as
the legal values in that schema under the "std-or-address" attribute
"registered-dd-type" type (which must be a "key-string").

Note that key-string = <a-z, A-Z, 0-9, and "-" >.

Mail System Name	Description			Reference
----------------	------------------------------- ---------
mcimail			MCI Mail

ADDRESS TYPES

The "address-type" is defined for use in the SMTP Delivery Status
Notification [RFC1891].

Address Type    	Description			Reference
----------------	------------------------------- ---------
rfc822                  Internet Mail                   [RFC1891]


DIAGNOSTIC TYPES

The "diagnostic-type" is defined for use in the SMTP Delivery Status
Notification [RFC1891].

Diagnostic Type    	Description			Reference
----------------	------------------------------- ---------
smtp                    Internet Mail                   [RFC1891]


MTA NAME TYPES

The "mta-name-type" is defined for use in the SMTP Delivery Status
Notification [RFC1891].

Address Type    	Description			Reference
----------------	------------------------------- ---------
dns                     Internet Mail                   [RFC1891]


MAIL TRANSMISSION TYPES


The Simple Mail Transfer Protocol [RFC821] and the Standard for the
Format of ARPA Internet Text Messages [RFC822] specify that a set of
"Received" lines will be prepended to the headers of electronic mail
messages as they are transported through the Internet.  These received
line may optionally include either or both a "via" phrase and/or a
"with" phrase.  The legal values for the phrases are listed here.  The
via phrase is intended to indicate the link or physical medium over
which the message was transferred.  The with phrase is intended to
indicate the protocol or logical process that was used to transfer the
message.


VIA link types	Description				Reference
--------------	----------------------------		---------
UUCP		Unix-to-Unix Copy Program		    [???]


WITH protocol types  Description                        Reference
-------------------  ----------------------------       ---------
SMTP	             Simple Mail Transfer Protocol	 [RFC821]
ESMTP	             SMTP with Service Extensions       [RFC1869]


REFERENCES


[ANSI-X12]

[POSTSCRIPT] Adobe Systems Inc., "PostScript Langpuage Reference
Manual", 2nd Edition, 2nd Printing, January 1991.

[IS-10646]

[RFC821] Postel, J., "Simple Mail Transfer Protocol", STD 10, RFC 821,
         USC/Information Sciences Institute, August 1982.

[RFC822] Crocker, D., "Standard for the Format of ARPA-Internet Text
         Messages", STD 11, RFC 822, UDEL, August 1982.

[RFC1274] Barker, P., and S. Kille, "The COSINE and Internet X.500
          Schema", RFC 1274, University College London, November 1991. 

[RFC1327] Hardcastle-Kille, S., "Mapping between X.400(1988) / ISO
          10021 and RFC 822", RFC 1327, University College London,
          May 1992.

[RFC1421] Linn, J., "Privacy Enhancement for Internet Electronic
          Mail: Part I: Message Encipherment and Authentication
          Procedures", RFC 1421, IAB IRTF PSRG, IETF PEM WG,
          February 1993.

[RFC1422] Kent, S., "Privacy Enhancement for Internet
          Electronic Mail: Part II -- Certificate-Based Key
          Management", BBN, IAB IRTF PSRG, IETF PEM, February 1993.

[RFC1423] Balenson, D., "Privacy Enhancement for Internet Electronic
          Mail: Part III -- Algorithms, Modes, and Identifiers",
          RFC 1423, TIS, IAB IRTF PSRG, IETF PEM WG, February 1993.

[RFC1505] Costanzo, A., Robinson, D., and R. Ullmann, "Encoding Header
          Field for Internet Messages", RFC 1505, AKC Consulting,
          Computervision Corporation, August 1993.

[RFC1652] Klensin, J., Freed, N., Rose, M., Stefferud, E., and D.
          Crocker, "SMTP Service Extension for 8bit-MIMEtransport", 
          RFC 1652, MCI, Innosoft, Dover Beach Consulting, Inc.,
          Network Management Associates, Inc., Silicon Graphics, Inc.,
          July 1994.

[RFC1830] Vaudreuil, G., "SMTP Service Extensions for Transmission of
          Large and Binary MIME Messages", RFC 1830, Octel Network
          Services, August 1995.

[RFC1854] Freed, N., "SMTP Service Extension for Command Pipelining",
          RFC 1854, Innosoft, October 1995.

[RFC1869] Klensin, J., Freed, N., Rose, M., Stefferud, E., and D.
          Crocker, "SMTP Service Extensions", RFC 1869, MCI, Innosoft,
          Dover Beach Consulting, Inc., Network Management Associates,
          Inc., Brandenberg Consulting., November 1995.

[RFC1870] Klensin, J., Freed, N., and K. Moore, "SMTP Service
          Extension for Message Size Declaration", RFC 1870,
          MCI, Innosoft, University of Tennessee, November 1995.

[RFC1891] Moore, K., "SMTP Service Extension for Delivery Status
          Notification", RFC 1891, University of Tennessee, January
          1996.

PEOPLE

[Eric Allman]


[]


Connected: An Internet Encyclopedia
Mail Parameters

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