[pfx] Re: From/Reply-To munging (was Postfix in containers/kubernetes)

[Scott Kitterman via Postfix-users]

On October 18, 2024 3:17:04 PM UTC, Marvin Renich via Postfix-users 
<postfix-users@postfix.org> wrote:
>* Wietse Venema via Postfix-users <postfix-users@postfix.org> [241018 10:51]:
>> The From/Reply-To munging are the result of standard Mailman
>> workarounds for DMARC (i.e. to satisfy DKIM and SPF).
>
>"From:", yes (for SPF, not DKIM I believe).  But I don't think Reply-To
>affects SPF at all, and only DKIM if the Reply-To header is signed, in
>which case it is signed by mailman after Reply-To munging.  Please don't
>modify an explicit Reply-To set by the sender.

This is, I admit, slightly pedantic, but here it comes anyway...

SPF has nothing to do with it.  SPF and mailing lists as traditionally used are 
fine.  The issue is 100% how DMARC uses SPF results.  There are some actual SPF 
interoperability issues, but this isn't one of them.

Scott K
_______________________________________________
Postfix-users mailing list -- postfix-users@postfix.org
To unsubscribe send an email to postfix-users-le...@postfix.org