Re: [ADMIN] Recent issues with NTLK bounce notifications

Grant Hutchinson <[email protected]>
Newsgroups gmane.comp.systems.newton.newtontalk
Message-ID <[email protected]>
> On Apr 13, 2019, at 3:16 PM, B <[email protected]> wrote:
> 
> Thank you, list Dad, and for all your wonderful dedicated service!

And again, thank you for your patience while we get this figured out.


> On Apr 13, 2019, at 3:51 PM, Andrei Chichak <[email protected]> wrote:
> 
> I figured that my hosting people in Toronto screwed up again and wondered how DMARC managed to get the notification through.
> 
> That lead me down the path of “this has to be spam, logically this can’t happen”. But everything in the message headers looked legit.

Yeah, the headers were fine all along. What changed seems to be the way that certain mail servers accept the "From" address.

The setting change I made replaces the poster's address in the From: header (eg: [email protected]) with the mailing list's posting address ([email protected]) and adds the poster's address to the Reply-To: header.

This "header munge" should only take place when someone posts to the list from a domain that has a DMARC reject or quarantine policy in place, such as Yahoo, AOL, or the like.

Fingers crossed.

g.


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