[CentOS] postfix and mail origin checks
Ralph Angenendt
ra+centos at br-online.de
Wed Jul 29 13:17:23 UTC 2009
RedShift wrote:
> Karanbir Singh wrote:
> > Whats the 'robust' way to make sure email to a specific destination
> > is only accepted if it came over the localhost:25 or
> > /usr/sbin/sendmail route ? anything else should get a 5xx error.
> > Emails to other destinations should remain unaffected.
> >
> > Using postfix/c4. Had a look around, and header_checks might be one
> > way to go.
> >
>
> The easiest way is probably to edit master.cf and make smtpd only
> listen on localhost:25.
Ummm. The question was "how to *identify* mails coming from localhost",
not "restrict everything to localhost".
> Otherwise us an access table.
I'd be curious how you would do that.
Ralph
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