On 2020-05-11 20:14, Tim via users wrote: > On Mon, 2020-05-11 at 17:43 +0800, Ed Greshko wrote: >> I also think it is a good idea to see the format of what procmail is >> getting from cron and comparing it to what ends up delivered by an >> MTA such as postfix. >> >> From egreshko ..... is missing along with >> Return-Path: >> Delivered-To: >> Received: by >> Message-Id: >> Date: >> The MTA modifies the From: and To: lines to add a FQDN. >> >> And, yes, not all of those are "required". > I was of the understanding that a "From line" is a MBOX thing, > different from the From: header of an email. Correct. By default, it seems postfix delivers to /var/spool/mail in MBOX format. Don't know, and don't care, if that is configurable. > I knew Message-Id isn't required to be supplied from the authoring > program, though having a unique ID right from the start would make it > easier to identify all messages from start to finish (identify on the > originator's archive of their sent messages before it went out to a > SMTP server, with its return and replies, etc). > > Many of the other possible headers are also part of the mail delivery > system, so wouldn't actually come from the message authoring program. > I'd (logically) expect the SMTP server to fill in return-path, etc. > Right. -- The key to getting good answers is to ask good questions. _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx