>Does anyone know of a command line parameter or a way in which I can
>setup a rule to Verify that an email being relayed from my server is an
>actual email address on my server?
"Relay" means to send an outgoing E-mail through your mail server (as
opposed to E-mail that is destined to a local user). So if it is sent to
an actual E-mail address on your server, it won't be relayed.
If you are looking to make sure that the "From" address matches an address
on your server, beware that anyone can enter any return address in their
client, so there is no "safety" there.
>I am using the email for addresses option
Do you mean "Relay for addresses"?
>and I have all of the assigned IP address for my dial up users
>and my local users.
OK, that is good.
>However someone is still able to send spam off of
>my server using one of these IP addresses ...
Yes, of course. That's why you only should enter IP addresses that you
have control over. If you can't check to see who was using the IP address
at the time the spam was sent, you are running an open relay (although it
may be "partially closed").
>Also how can I track that email message and find out what the address that
>this
>user is sending from?
All you have to do is look at the "Received:" header from the E-mail that
they sent out. Or, look in the IMail logs.
>I have looked into the logs but I am having trouble determining which
>message is from the spammer and I do not know
>how to trace it back. Please send suggestions. Thanks
Well, I'm assuming that someone received the spam and complained about it,
or else you wouldn't know there is a problem. You can tell from the
headers of the spam who sent it (the IP address of the sender).
Or, take a look in the IMail logs to see when mail was sent to the person
who received the spam.
-Scott
---
Declude: Anti-virus, Anti-spam and Anti-hijacking solutions for
IMail. http://www.declude.com
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