> 20001212 082842 127.0.0.1 SMTPD (B48F020E) [63.17.172.68] EHLO laptop3
> 20001212 082842 127.0.0.1 SMTPD (00000048) Authenticated
> [EMAIL PROTECTED], session treated as local.
> 20001212 082843 127.0.0.1 SMTPD (B48F020E) [63.17.172.68] MAIL FROM:
> <[EMAIL PROTECTED]>
> Am I right in saying that he is (whether he knows it or not) is using
> my server as a gateway?
It depends on what you mean by "gateway". He is relaying mail through your
server. However, he does have an account on your server (the
"Authenticated" line means that he used SMTP AUTH to authenticate himself).
What he is doing is not a security risk. The only issue would be if
someone from an outside IP address could do that, without
authenticating. You might choose to say that he must use an E-mail address
at your domain, but that would strictly be a policy issue -- he would
certainly not like that.
-Scott
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