Johnny Billquist <b...@update.uu.se> writes: > On 2019-07-10 02:35, Greg Troxel wrote: >> Mayuresh <mayur...@acm.org> writes: >>> I have an smtp_header_check which adds Reply-To as the lists address >>> (quite contrary to yahoo's suggestion). >> >> And contrary to IETF standards. Repent! > > I know that there is always a debate about it, but I can't remember > seeing anything from IETF about it. Can you point me to that standard?
This post http://marc.merlins.org/netrants/reply-to-still-harmful.html references RFC 2822, saying: In April of 2001, the IETF issued af new document, RFC 2822, which obsoletes RFC 822. In this new RFC, the author addresses the Reply-To header in a few places, but the most relevant to this discussion is the following in section 3.6.2 "Originator fields": When the "Reply-To:" field is present, it indicates the mailbox(es) to which the author of the message suggests that replies be sent. and indeed I can see that text at https://www.ietf.org/rfc/rfc2822.txt Also, RFC2822 contains In all cases, the "From:" field SHOULD NOT contain any mailbox that does not belong to the author(s) of the message. See also section 3.6.3 for more information on forming the destination addresses for a reply. which, while it is SHOULD NOT, not MUST NOT, speaks against yahoo's scheme of setting the From: field to the list address. There are sometimes debates about whether mailing lists are forming new messages from the original message, but this says "author" instead of "sender", a nuance I had not previously noticed.
