On Sat, Mar 01, 2025 at 10:40:21PM -0500, Demi Marie Obenour via Postfix-devel 
wrote:

> > How about this:
> > 
> > main.cf:
> >     # Some Microsoft servers violate RFC 2554 section 4.
> >     smtp_reply_filter = pcre:{{/^334\s+GSSAPI\s+supported/ 334}}
> > 
> > For a description of inline PCRE table syntax, see
> > https://www.postfix.org/pcre_table.5.html#inline_specification
> > 
> > Patches? Patches? We don't need no steenkeeng patches. 
> > https://www.youtube.com/watch?v=VqomZQMZQCQ
> 
> Would it make sense to have this in either the default config,
> or as a commented-out option?  That way mail admins will know
> what is going on and have an easy way to fix it.

Well, this only belongs in a dedicated transport used to relay mail into
Exchange authenticated via GSSAPI.  This is a rather specialised use
case.  So I would not put this in main.cf.

At most a commented out "exchange-gssapi" transport in master.cf with
"-o { smtp_reply_filter = ... }" in master.cf, but perhaps really
just an example in SASL_README, with nothing in either main.cf or
master.cf that might confuse more users than it helps.

-- 
    Viktor.
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