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From: Doug Bagley <doug@deja.com>
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Subject: Re: Authentication warning on sender ... yuck
Date: 09 Feb 2000 21:42:53 -0600
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In-Reply-To: Harry Putnam's message of "09 Feb 2000 17:17:17 -0800"
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Harry Putnam <reader@newsguy.com> writes:
> Once more raising the question of what gnus does concerning a "Sender"
> line and where gnus stops and sendmail (mta)  starts.
> 
> I've been noticing this line in my messages:
> Authentication-Warning: reader.ptw.com: reader set sender to blah blah 

Sendmail will produce these headers.

> All those mail clients use sendmail as mta, but only messages sent
> with gnus contain that warning.  I do have this in .gnus.
> 
> (setq message-syntax-checks '((sender . disabled)))

The problem isn't the sender or gnus really, it's how sendmail is
invoked, with command line arguments to set the SMTP MAIL FROM, or
approximately that, my brain is fading.

I solved it on my end by adding myself as a trusted user to my
sendmail.cf, check out this section if you have it in your sendmail.cf:

#####################
#   Trusted users   #
#####################

# this is equivalent to setting class "t"
#Ft/etc/sendmail.ct
Troot
Tdaemon
Tuucp

Cheers,
Doug