Hi, Tomasz Rzad: > Hi all, > > How to block empty "mail from:" relaying?: > > mail from:<> > rcpt to:<root@localhost> This is not relaying. It's simply an email to the local system. You can block localhost if you want to, but that's documented => RTFM. -- Matthias Urlichs | noris network AG | http://smurf.noris.de/