Hi, I scanned the following RFC's; and gleaned (in strict chronological order), what they say about the reply-to field. The standards scanned were: 822 987 1026 1123 1137 1138 1148 1327 1495 1838 2157 2156
In all of these, Reply-to is explicitly said to be set by the originator or the author of the message. There is an example that says the originator may put the mailing list address there if they wish to. But they may not. And it was never ``designed to be used for mailing lists'', as someone has claimed here. I use a MUA, as I said before, that correctly allows *ME* to be in control, and I may reply solely to the list on any list I so choose. I hope this clarifies things. manoj ______________________________________________________________________ August 13, 1982 - 19 - RFC #822 Note: The "Reply-To" field is added by the originator and serves to direct replies, whereas the "Return-Path" field is used to identify a path back to the origina- tor. 4.4. ORIGINATOR FIELDS The standard allows only a subset of the combinations possi- ble with the From, Sender, Reply-To, Resent-From, Resent-Sender, and Resent-Reply-To fields. The limitation is intentional. 4.4.3. REPLY-TO / RESENT-REPLY-TO This field provides a general mechanism for indicating any mailbox(es) to which responses are to be sent. Three typical uses for this feature can be distinguished. In the first case, the author(s) may not have regular machine-based mail- boxes and therefore wish(es) to indicate an alternate machine address. In the second case, an author may wish additional persons to be made aware of, or responsible for, replies. A somewhat different use may be of some help to "text message teleconferencing" groups equipped with automatic distribution services: include the address of that service in the "Reply- To" field of all messages submitted to the teleconference; then participants can "reply" to conference submissions to guarantee the correct distribution of any submission of their own. Note: The "Return-Path" field is added by the mail transport service, at the time of final deliver. It is intended to identify a path back to the orginator of the mes- sage. The "Reply-To" field is added by the message originator and is intended to direct replies. 4.4.4. AUTOMATIC USE OF FROM / SENDER / REPLY-TO For systems which automatically generate address lists for replies to messages, the following recommendations are made: o The "Sender" field mailbox should be sent notices of any problems in transport or delivery of the original messages. If there is no "Sender" field, then the "From" field mailbox should be used. o The "Sender" field mailbox should NEVER be used automatically, in a recipient's reply message. o If the "Reply-To" field exists, then the reply should go to the addresses indicated in that field and not to the address(es) indicated in the "From" field. August 13, 1982 - 22 - RFC #822 Standard for ARPA Internet Text Messages o If there is a "From" field, but no "Reply-To" field, the reply should be sent to the address(es) indicated in the "From" field. Sometimes, a recipient may actually wish to communicate with the person that initiated the message transfer. In such cases, it is reasonable to use the "Sender" address. This recommendation is intended only for automated use of originator-fields and is not intended to suggest that replies may not also be sent to other recipients of messages. It is up to the respective mail-handling programs to decide what additional facilities will be provided. APPENDIX A.2.4. Committee activity, with one author George is a member of a committee. He wishes to have any replies to his message go to all committee members. From: George Jones <[EMAIL PROTECTED]> Sender: [EMAIL PROTECTED] Reply-To: The Committee: [EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED]; Note that if George had not included himself in the August 13, 1982 - 37 - RFC #822 ^L Standard for ARPA Internet Text Messages enumeration of The Committee, he would not have gotten an implicit reply; the presence of the "Reply-to" field SUPER- SEDES the sending of a reply to the person named in the "From" field. A.2.5. Secretary acting as full agent of author George Jones asks his secretary ([EMAIL PROTECTED]) to send a message for him in his capacity as Group. He wants his secre- tary to handle all replies. From: George Jones <[EMAIL PROTECTED]> Sender: [EMAIL PROTECTED] Reply-To: [EMAIL PROTECTED] A.2.6. Agent for user without online mailbox A friend of George's, Sarah, is visiting. George's secretary sends some mail to a friend of Sarah in computer- land. Replies should go to George, whose mailbox is Jones at Registry. From: Sarah Friendly <[EMAIL PROTECTED]> Sender: Secy-Name <[EMAIL PROTECTED]> Reply-To: [EMAIL PROTECTED] A.3.3. About as complex as you're going to get Date : 27 Aug 76 0932 PDT From : Ken Davis <[EMAIL PROTECTED]> Subject : Re: The Syntax in the RFC Sender : [EMAIL PROTECTED] Reply-To : [EMAIL PROTECTED] To : George Jones <[EMAIL PROTECTED]>, [EMAIL PROTECTED] cc : Important folk: Tom Softwood <[EMAIL PROTECTED]>, "Sam Irving"@Other-Host;, Standard Distribution: /main/davis/people/[EMAIL PROTECTED], "<Jones>standard.dist.3"@Tops-20-Host>; Comment : Sam is away on business. He asked me to handle his mail for him. He'll be able to provide a more accurate explanation when he returns next week. In-Reply-To: <[EMAIL PROTECTED]>, George's message X-Special-action: This is a sample of user-defined field- names. There could also be a field-name "Special-action", but its name might later be preempted Message-ID: <[EMAIL PROTECTED]> August 13, 1982 - 39 - RFC #822 Standard for ARPA Internet Text Messages ______________________________________________________________________ RFC 987 June 1986 Mapping between X.400 and RFC 822 Reply-To: Mapped to P2.Heading.replyToUsers. ______________________________________________________________________ Kille [Page 11] ^L RFC 1138 Mapping X.400(88) and 822 December 1989 RFC 1148 Mapping X.400(88) and 822 March 1990 RFC 1327 Mapping between X.400(1988) and RFC 822 May 1992 Kille Standards Track [Page 89] RFC 2156 MIXER January 1998 2.2.1. Origination in RFC 822 A mechanism of mapping, used in several cases, is to map the RFC 822 header into a heading extension in the IPM (InterPersonal Message). This can be regarded as partial support, as it makes the information available to any X.400 implementations which are interested in these services. Communities which require significant RFC 822 interworking should require that their X.400 User Agents are able to display these heading extensions. Support for the various service elements (headers) is now listed. Date: Supported. From: Supported. For messages where there is also a sender field, the mapping is to "Authorising Users Indication", which has subtly different semantics to the general RFC 822 usage of From:. Sender: Supported. Reply-To: Supported. ___2.2.2. Reception by RFC 822 This considers reception by an RFC 822 User Agent of a message originated in an X.400 system and transferred across a gateway. The following standard services (headers) may be present in such a message: Date: From: Sender: Reply-To: 4.7.3.5. Phrase form In "Reply-To:" and "References:", the encoding 822.phrase may be used as an alternative to 822.msg-id. To map from 822.phrase to IPMS.IPMIdentifier, assign IPMS.IPMIdentifier.user-relative- identifier to the phrase. When mapping from IPMS.IPMIdentifier for "Reply-To:" and "References:", if IPMS.IPMIdentifier.user is absent and IPMS.IPMIdentifier.user-relative-identifier does not parse as 822.msg-id, generate an 822.phrase rather than adding the domain ___________________________________________________________________ 2.2.2. Reception by RFC 822 This considers reception by an RFC 822 User Agent of a message originated in an X.400 system and transferred across a gateway. The following standard services (headers) may be present in such a message: Date: From: Sender: Reply-To: ______________________________________________________________________ -- It is no the shortcomings of others, nor what others have done or not done that one should think about, but what one has done or not done oneself. 50 Manoj Srivastava <[EMAIL PROTECTED]> <http://www.datasync.com/%7Esrivasta/> Key C7261095 fingerprint = CB D9 F4 12 68 07 E4 05 CC 2D 27 12 1D F5 E8 6E -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]