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Re: how to limit the MAIL FROM domains for outgoing mail

From: Udo Rader (udo.raderbestsolution.at)
Date: Tue Nov 01 2005 - 12:53:51 CST


Am Dienstag, den 01.11.2005, 19:05 +0100 schrieb Magnus Bäck:
> On Tuesday, November 01, 2005 at 18:31 CET,
> Udo Rader <udo.raderbestsolution.at> wrote:
>
> > we have a rather complex postfix installation here and would now like
> > to restrict the domains being used for _sending_ mails.
>
> The envelope sender address then, I assume.
>
> > I have really tried to find something in the vast documentation, but I
> > did not come very far (or did not understand the various pieced needed
> > for it).
> >
> > We have some local clients here but also a couple of external
> > customers that we relay email for and some days ago I noticed that
> > some of them are sending mails with "illegal" sender addresses.
>
> Do they authenticate via SASL?
>
> http://www.postfix.org/postconf.5.html#smtpd_sender_login_maps
> http://www.postfix.org/postconf.5.html#reject_sender_login_mismatch

yes, they authenticate via SASL. Your hints are exactly what I was
looking for!

Thanks for this fast reply!

Udo Rader
--
BestSolution.at EDV Systemhaus GmbH
http://www.bestsolution.at