It's a sendmail thing, but it must be so standard that someone's going to know how to do it surely? I just need my box to reject attempts to post through it (eg: other hosts trying to post mail to other hosts via my host) as a basic and I understand common anti-spam measure. Naturally, I still want this box to be able to receive mail being sent to local user accounts on it, and I want to be able to send mail from those local user accounts. It's a SuSE box, with sendmail.cf currently sitting as written out by YaST, so a very standard configuration. I was able to post from my laptop (behind a masquerading host here) through the remote server - ie: that server being configured here as my SMTP server - to my Hotmail account. How do I stop this and get that "We do not relay" error that I've seen coming from other servers? TIA -- Rachel -- To get out of this list, please send email to majordomo@suse.com with this text in its body: unsubscribe suse-linux-e Check out the SuSE-FAQ at <A HREF="http://www.suse.com/Support/Doku/FAQ/"><A HREF="http://www.suse.com/Support/Doku/FAQ/</A">http://www.suse.com/Support/Doku/FAQ/</A</A>> and the archive at <A HREF="http://www.suse.com/Mailinglists/suse-linux-e/index.html"><A HREF="http://www.suse.com/Mailinglists/suse-linux-e/index.html</A">http://www.suse.com/Mailinglists/suse-linux-e/index.html</A</A>>