Re: suggestions for altering outbound SMTP to work-around multi-CC denials
[email protected] Mon, 23 Feb 2026 12:25:22 -0500
| Newsgroups | gmane.mail.nmh.devel |
|---|---|
| Message-ID | <[email protected]_.yMu8> |
Following up on the many(!) replies: A more accurate description of the issue is that google and verizon bounce= mail back when there are multiple "CC" or "To" _headers_ (as per RFC 5322), not just multiple recipients. The best solution (after retraini= ng the keyboardist not to use multiple headers) would be to programmatical= ly condense headers (ie., combine the content of each CC header into a single= CC line). Ideally, this would happen as a filter operation after the MUA = and before my local MTA hands the message to the outbound rely. This would res= olve the problem even if it arises from a message not composed with nmh (ie., claws-mail, command-line, or a local daemon). I dunno if postfix= can condense headers this way, or perhaps I can wrap localhost:SMTP in a = script (using scan & anno?!) and then send the altered message to postfix for out= bound delivery And yes, I'm doing mail relying via panix (and others), but the bounces ar= en't due to SPK or DKIM records. Many thanks, Mark -- = Mark Bergman Biker, Rock Climber, SCUBA Diver, Unix mechanic, IATSE #1 = Stagehand '94 Yamaha GTS1000A^1 2023 Triumph GT Explorer https://www.flickr.com/photos/rmsppu