RE: smtpd_sender_login_maps and out of office messages
> -----Original Message-----Thanks Wietse.
> From: owner-postfix-users@... [mailto:owner-postfix-
> users@...] On Behalf Of Wietse Venema
> Sent: Wednesday, July 31, 2013 12:06 PM
> To: Postfix users
> Subject: Re: smtpd_sender_login_maps and out of office messages
> James Day:
> > Hello list,
> > Hopefully a simple question but I can't seem to find the answer in the
> > documentation (maybe my Google skills are lacking!).
> > I'm using smtpd_sender_login_maps to ensure that users relaying only
> > send mail from their own domains.
> > Is it possible to allow an exception for out of office messages /
> > automatic replies (ie where there is no sender address)?
> It is possible.
> You would need to "permit" the null envelope sender address before
> enforcing reject_sender_login_mismatch. At the same time this should not
> make you an open relay for mail from <>.
> For these reasons I suggest moving reject_sender_login_mismatch out of
> smtpd_recipient_restrictions, and into smtpd_sender_restrictions.
> smtpd_sender_restrictions =
> check_sender_access hash:/etc/postfix/sender_access
> <> permit
> The <> is a surrogate for the empty adress, and is configured with the
> smtpd_null_access_lookup_key parameter. Postfix never queries a table
> with the null-string lookup key.
This is my working configuration (hopefully you can't see any issues)