[afnog] Postfix relay

[SM]

Hi Antonio,
At 05:48 17-09-2008, Antonio Godinho wrote:
>I am trying to get rid of problem arising with the infection of some
>machines on the local network that sometimes start sending 1000's of
>messages with invalid FROM addresses. Actually the domain part is simple to
>solve, apparently the option reject_unlisted_sender is supposed to reject

You could enforce SMTP authentication for mail submission.

Regards,
-sm