[CentOS] postfix and mail origin checks
RedShift
redshift at pandora.be
Wed Jul 29 12:58:36 UTC 2009
Karanbir Singh wrote:
> hi,
>
> 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.
So instead of
# smtp inet n - n - - smtpd
Use
127.0.0.1:smtp inet n - n - - smtpd
Otherwise us an access table.
Glenn
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