Spam sent to me from my own mail server ?

Jason C. Wells jcw at
Wed Aug 27 15:27:09 UTC 2008

Peter Ulrich Kruppa wrote:
> Hello,
> for some time now I keep receiving spam mails from my own (small) mail
> server, some of them with faked usernames some of them even with my own
> (ulrich at ...).
>   1) How is this possible?
>   2) What can I or do I have to do against it?
> I am running a quite plain sendmail setup from 7.0 -STABLE.

Look to see if you are running an open relay.  You shouldn't be by
default.  There are websites that will test this for you if you simply
provide the IP of the server.

That's a start.

My SPAM policy is something like this.  Spammers win. feh!  It's not the
best policy, but it requires the least effort on my part.


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