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authorGraham Wilson <graham@mknod.org>2004-11-29 16:40:04 +0000
committerGraham Wilson <graham@mknod.org>2004-11-29 16:40:04 +0000
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Remove RFCs from the trunk, since we don't distribute them anyways. All of the removed RFCs are listed in the design-notes.html file, with the exception of NNTP (RFC977). Also add a link to the "LAN Mail Protocols" document to the design-notes.html file.
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-Network Working Group M. Crispin
-Request for Comments: 2062 University of Washington
-Category: Informational December 1996
-
-
- Internet Message Access Protocol - Obsolete Syntax
-
-Status of this Memo
-
- This memo provides information for the Internet community. This memo
- does not specify an Internet standard of any kind. Distribution of
- this memo is unlimited.
-
-Abstract
-
- This document describes obsolete syntax which may be encountered by
- IMAP4 implementations which deal with older versions of the Internet
- Mail Access Protocol. IMAP4 implementations MAY implement this
- syntax in order to maximize interoperability with older
- implementations.
-
- This document repeats information from earlier documents, most
- notably RFC 1176 and RFC 1730.
-
-Obsolete Commands and Fetch Data Items
-
- The following commands are OBSOLETE. It is NOT required to support
- any of these commands or fetch data items in new server
- implementations. These commands are documented here for the benefit
- of implementors who may wish to support them for compatibility with
- old client implementations.
-
- The section headings of these commands are intended to correspond
- with where they would be located in the main document if they were
- not obsoleted.
-
-6.3.OBS.1. FIND ALL.MAILBOXES Command
-
- Arguments: mailbox name with possible wildcards
-
- Data: untagged responses: MAILBOX
-
- Result: OK - find completed
- NO - find failure: can't list that name
- BAD - command unknown or arguments invalid
-
-
-
-
-
-
-Crispin Informational [Page 1]
-
-RFC 2062 IMAP4 Obsolete December 1996
-
-
- The FIND ALL.MAILBOXES command returns a subset of names from the
- complete set of all names available to the user. It returns zero
- or more untagged MAILBOX replies. The mailbox argument to FIND
- ALL.MAILBOXES is similar to that for LIST with an empty reference,
- except that the characters "%" and "?" match a single character.
-
- Example: C: A002 FIND ALL.MAILBOXES *
- S: * MAILBOX blurdybloop
- S: * MAILBOX INBOX
- S: A002 OK FIND ALL.MAILBOXES completed
-
-6.3.OBS.2. FIND MAILBOXES Command
-
- Arguments: mailbox name with possible wildcards
-
- Data: untagged responses: MAILBOX
-
- Result: OK - find completed
- NO - find failure: can't list that name
- BAD - command unknown or arguments invalid
-
- The FIND MAILBOXES command returns a subset of names from the set
- of names that the user has declared as being "active" or
- "subscribed". It returns zero or more untagged MAILBOX replies.
- The mailbox argument to FIND MAILBOXES is similar to that for LSUB
- with an empty reference, except that the characters "%" and "?"
- match a single character.
-
- Example: C: A002 FIND MAILBOXES *
- S: * MAILBOX blurdybloop
- S: * MAILBOX INBOX
- S: A002 OK FIND MAILBOXES completed
-
-6.3.OBS.3. SUBSCRIBE MAILBOX Command
-
- Arguments: mailbox name
-
- Data: no specific data for this command
-
- Result: OK - subscribe completed
- NO - subscribe failure: can't subscribe to that name
- BAD - command unknown or arguments invalid
-
- The SUBSCRIBE MAILBOX command is identical in effect to the
- SUBSCRIBE command. A server which implements this command must be
- able to distinguish between a SUBSCRIBE MAILBOX command and a
- SUBSCRIBE command with a mailbox name argument of "MAILBOX".
-
-
-
-
-Crispin Informational [Page 2]
-
-RFC 2062 IMAP4 Obsolete December 1996
-
-
- Example: C: A002 SUBSCRIBE MAILBOX #news.comp.mail.mime
- S: A002 OK SUBSCRIBE MAILBOX to #news.comp.mail.mime
- completed
- C: A003 SUBSCRIBE MAILBOX
- S: A003 OK SUBSCRIBE to MAILBOX completed
-
-
-6.3.OBS.4. UNSUBSCRIBE MAILBOX Command
-
- Arguments: mailbox name
-
- Data: no specific data for this command
-
- Result: OK - unsubscribe completed
- NO - unsubscribe failure: can't unsubscribe that name
- BAD - command unknown or arguments invalid
-
- The UNSUBSCRIBE MAILBOX command is identical in effect to the
- UNSUBSCRIBE command. A server which implements this command must
- be able to distinguish between a UNSUBSCRIBE MAILBOX command and
- an UNSUBSCRIBE command with a mailbox name argument of "MAILBOX".
-
- Example: C: A002 UNSUBSCRIBE MAILBOX #news.comp.mail.mime
- S: A002 OK UNSUBSCRIBE MAILBOX from #news.comp.mail.mime
- completed
- C: A003 UNSUBSCRIBE MAILBOX
- S: A003 OK UNSUBSCRIBE from MAILBOX completed
-
-6.4.OBS.1 PARTIAL Command
-
- Arguments: message sequence number
- message data item name
- position of first octet
- number of octets
-
- Data: untagged responses: FETCH
-
- Result: OK - partial completed
- NO - partial error: can't fetch that data
- BAD - command unknown or arguments invalid
-
- The PARTIAL command is equivalent to the associated FETCH command,
- with the added functionality that only the specified number of
- octets, beginning at the specified starting octet, are returned.
- Only a single message can be fetched at a time. The first octet
- of a message, and hence the minimum for the starting octet, is
- octet 1.
-
-
-
-
-Crispin Informational [Page 3]
-
-RFC 2062 IMAP4 Obsolete December 1996
-
-
- The following FETCH items are valid data for PARTIAL: RFC822,
- RFC822.HEADER, RFC822.TEXT, BODY[<section>], as well as any .PEEK
- forms of these.
-
- Any partial fetch that attempts to read beyond the end of the text
- is truncated as appropriate. If the starting octet is beyond the
- end of the text, an empty string is returned.
-
- The data are returned with the FETCH response. There is no
- indication of the range of the partial data in this response. It
- is not possible to stream multiple PARTIAL commands of the same
- data item without processing and synchronizing at each step, since
- streamed commands may be executed out of order.
-
- There is no requirement that partial fetches follow any sequence.
- For example, if a partial fetch of octets 1 through 10000 breaks
- in an awkward place for BASE64 decoding, it is permitted to
- continue with a partial fetch of 9987 through 19987, etc.
-
- The handling of the \Seen flag is the same as in the associated
- FETCH command.
-
- Example: C: A005 PARTIAL 4 RFC822 1 1024
- S: * 1 FETCH (RFC822 {1024}
- S: Return-Path: <gray@cac.washington.edu>
- S: ...
- S: ......... FLAGS (\Seen))
- S: A005 OK PARTIAL completed
-
-6.4.5.OBS.1 Obsolete FETCH Data Items
-
- The following FETCH data items are obsolete:
-
- BODY[<...>0] A body part number of 0 is the [RFC-822] header of
- the message. BODY[0] is functionally equivalent to
- BODY[HEADER], differing in the syntax of the
- resulting untagged FETCH data (BODY[0] is
- returned).
-
- RFC822.HEADER.LINES <header_list>
- Functionally equivalent to BODY.PEEK[HEADER.LINES
- <header_list>], differing in the syntax of the
- resulting untagged FETCH data (RFC822.HEADER is
- returned).
-
-
-
-
-
-
-
-Crispin Informational [Page 4]
-
-RFC 2062 IMAP4 Obsolete December 1996
-
-
- RFC822.HEADER.LINES.NOT <header_list>
- Functionally equivalent to
- BODY.PEEK[HEADER.LINES.NOT <header_list>],
- differing in the syntax of the resulting untagged
- FETCH data (RFC822.HEADER is returned).
-
- RFC822.PEEK Functionally equivalent to BODY.PEEK[], except for
- the syntax of the resulting untagged FETCH data
- (RFC822 is returned).
-
- RFC822.TEXT.PEEK
- Functionally equivalent to BODY.PEEK[TEXT], except
- for the syntax of the resulting untagged FETCH data
- (RFC822.TEXT is returned).
-
-Obsolete Responses
-
- The following responses are OBSOLETE. Except as noted below, these
- responses MUST NOT be transmitted by new server implementations.
- Client implementations SHOULD accept these responses.
-
- The section headings of these responses are intended to correspond
- with where they would be located in the main document if they were
- not obsoleted.
-
-7.2.OBS.1. MAILBOX Response
-
- Data: name
-
- The MAILBOX response MUST NOT be transmitted by server
- implementations except in response to the obsolete FIND MAILBOXES
- and FIND ALL.MAILBOXES commands. Client implementations that do
- not use these commands MAY ignore this response. It is documented
- here for the benefit of implementors who may wish to support it
- for compatibility with old client implementations.
-
- This response occurs as a result of the FIND MAILBOXES and FIND
- ALL.MAILBOXES commands. It returns a single name that matches the
- FIND specification. There are no attributes or hierarchy
- delimiter.
-
- Example: S: * MAILBOX blurdybloop
-
-
-
-
-
-
-
-
-
-Crispin Informational [Page 5]
-
-RFC 2062 IMAP4 Obsolete December 1996
-
-
-7.3.OBS.1. COPY Response
-
- Data: none
-
- The COPY response MUST NOT be transmitted by new server
- implementations. Client implementations MUST ignore the COPY
- response. It is documented here for the benefit of client
- implementors who may encounter this response from old server
- implementations.
-
- In some experimental versions of this protocol, this response was
- returned in response to a COPY command to indicate on a
- per-message basis that the message was copied successfully.
-
- Example: S: * 44 COPY
-
-7.3.OBS.2. STORE Response
-
- Data: message data
-
- The STORE response MUST NOT be transmitted by new server
- implementations. Client implementations MUST treat the STORE
- response as equivalent to the FETCH response. It is documented
- here for the benefit of client implementors who may encounter this
- response from old server implementations.
-
- In some experimental versions of this protocol, this response was
- returned instead of FETCH in response to a STORE command to report
- the new value of the flags.
-
- Example: S: * 69 STORE (FLAGS (\Deleted))
-
-Formal Syntax of Obsolete Commands and Responses
-
- Each obsolete syntax rule that is suffixed with "_old" is added to
- the corresponding name in the formal syntax. For example,
- command_auth_old adds the FIND command to command_auth.
-
- command_auth_old ::= find
-
- command_select_old
- ::= partial
-
- date_year_old ::= 2digit
- ;; (year - 1900)
-
- date_time_old ::= <"> date_day_fixed "-" date_month "-" date_year
- SPACE time "-" zone_name <">
-
-
-
-Crispin Informational [Page 6]
-
-RFC 2062 IMAP4 Obsolete December 1996
-
-
- find ::= "FIND" SPACE ["ALL."] "MAILBOXES" SPACE
- list_mailbox
-
- fetch_att_old ::= "RFC822.HEADER.LINES" [".NOT"] SPACE header_list /
- fetch_text_old
-
- fetch_text_old ::= "BODY" [".PEEK"] section_old /
- "RFC822" [".HEADER" / ".TEXT" [".PEEK"]]
-
- msg_data_old ::= "COPY" / ("STORE" SPACE msg_att)
-
- partial ::= "PARTIAL" SPACE nz_number SPACE fetch_text_old SPACE
- number SPACE number
-
- section_old ::= "[" (number ["." number]) "]"
-
- subscribe_old ::= "SUBSCRIBE" SPACE "MAILBOX" SPACE mailbox
-
- unsubscribe_old ::= "UNSUBSCRIBE" SPACE "MAILBOX" SPACE mailbox
-
- zone_name ::= "UT" / "GMT" / "Z" / ;; +0000
- "AST" / "EDT" / ;; -0400
- "EST" / "CDT" / ;; -0500
- "CST" / "MDT" / ;; -0600
- "MST" / "PDT" / ;; -0700
- "PST" / "YDT" / ;; -0800
- "YST" / "HDT" / ;; -0900
- "HST" / "BDT" / ;; -1000
- "BST" / ;; -1100
- "A" / "B" / "C" / "D" / "E" / "F" / ;; +1 to +6
- "G" / "H" / "I" / "K" / "L" / "M" / ;; +7 to +12
- "N" / "O" / "P" / "Q" / "R" / "S" / ;; -1 to -6
- "T" / "U" / "V" / "W" / "X" / "Y" ;; -7 to -12
-
-Security Considerations
-
- Security issues are not discussed in this memo.
-
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-
-Crispin Informational [Page 7]
-
-RFC 2062 IMAP4 Obsolete December 1996
-
-
-Author's Address
-
- Mark R. Crispin
- Networks and Distributed Computing
- University of Washington
- 4545 15th Aveneue NE
- Seattle, WA 98105-4527
-
- Phone: (206) 543-5762
- EMail: MRC@CAC.Washington.EDU
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-Crispin Informational [Page 8]
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