Security against sending spam
Hi!
How am I secured against that my Exchange server sending out spam to the world?
How can I control that this doesn't occur? Can I know when it occurs (before anyone complains, if so)?
We using a pop3 parser for delivery TO Exchange from our ISP (and please leave that so, that's our choice).
Exchange are sending the mail directly, not through smtprelay.
How am I secured against that my Exchange server sending out spam to the world?
How can I control that this doesn't occur? Can I know when it occurs (before anyone complains, if so)?
We using a pop3 parser for delivery TO Exchange from our ISP (and please leave that so, that's our choice).
Exchange are sending the mail directly, not through smtprelay.
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Arath: Thanks' I don't think that my Exchange is configured for Relaying. Is there a way to check? I haven't specifically configured it that way :-).
Simonpainter
I'm not afraid that anyone gets into our network and sending spam. Also the use of port 25 already is restricted to the mailserver 8-). I was more out for the risk that Exchange itself starting to send spam. In case of misconfigured or hacked mailheaders making exchange believe anything else?! Maybe that doesn't work that way? I think that should be a really major problem before our ISP telling us that we sending out SPAM -- If that would be the case, that should be appearable at used bandwith/connections in the firewall.
Simonpainter
I'm not afraid that anyone gets into our network and sending spam. Also the use of port 25 already is restricted to the mailserver 8-). I was more out for the risk that Exchange itself starting to send spam. In case of misconfigured or hacked mailheaders making exchange believe anything else?! Maybe that doesn't work that way? I think that should be a really major problem before our ISP telling us that we sending out SPAM -- If that would be the case, that should be appearable at used bandwith/connections in the firewall.
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Thats the main point. IF it does not allow realying, then it can't be used by external to send spam.