System abused by spammer?

[Andrey Simonenko]

On Fri, 28 Mar 2003 09:06:21 +0000 (UTC) in lucky.freebsd.questions, Martin Moeller wrote:

> I thought, sendmail rejects relaying per default. What can I do?
> (HELP!!! (!!!) )
> 

There is relay_based_on_MX feature in Sendmail.  Check if your
Sendmail has this feature off, also check if that spammer specified
your system as MX for his/her domain.

Hope this will help.