Hi Viktor, On 2023-12-29 19:59:42 +0100, Viktor Dukhovni via Postfix-users wrote:
RFCs 5321, 2821 and 821 have been around long enough to expect compliance with core elements of the SMTP specification from any mainstream MTA, and particularly Postfix, which appears to be the most widely deployed MTA by some measures.
To avoid a potential misunderstanding: I do not see any reason to cast doubt on the RFC compliance of Postfix. I think the issue discussed in this thread rather goes beyond what is specified in RFCs. It basically boils down to the question whether the RFC imposed ranking based on DNS record types is stronger or weaker than the ranking imposed by the order of the specified relay hosts. I neither found an answer to that question in RFCs nor in the Postfix documentation (I hope I have not missed anything). Wietse kindly answered that the RFC imposed ranking is implemented on the level of individual entries of the relay host list rather than on the ensemble of relay host entries. Maybe it is worth clarifying this point in the Postfix documentation.
Best regards, Peter _______________________________________________ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
