nefkho,
I very much agree with Ray here. - With no information you will receive no answer - NO HELP!
But if indeed you are an open relay we DO want to clear you
Note: Unmodified, SME itself is pretty safe.
Check whether your
SME has been taken over(due to some modifications).
or whether the
culprit is something "behind it" (like (Windows-) workstations.)
To check the server, install
root-kit-hunter(ssh into your server as root, cut and paste the code below)cd /tmp
wget http://downloads.rootkit.nl/rkhunter-1.2.7.tar.gz
tar xvzf rkhunter-1.2.7.tar.gz
cd /tmp/rkhunter
sh installer.sh
rkhunter --update
rkhunter -c
- Post your abuse.net info
...give us the information abuse.net and you generated concerning your SME server that made you think your SME is an open relay.
- Report your rkhunter findings...
Good luck
Regards
Reinhold