On Wed, Dec 12, 2012 at 10:39:23AM +0100, Frank Bonnet wrote: > is it possible to block all a domain using > smtpd_sender_restrictions ? > > @spammers.com DISCARD
First, why/who do you want to block? Almost all spam is sent with forged sender addresses, not the actual spammer's address. Blocking by sender address runs a risk of blocking a real sender. And to the point for you as admin: it does not scale well. Any single spam run might consist of thousands of sender addresses and domains. Second, there is no need to limit this to smtpd_sender_restrictions. It might be easier to maintain in smtpd_recipient_restrictions. http://www.postfix.org/SMTPD_ACCESS_README.html Third, why discard? Why not reject? Discarding mail based on sender addresses is reckless. Furthermore it wastes bandwidth and time; just DTRT and reject it. Fourth, please do not use real Internet domains in examples. There are example.{com,net,org,...} for that. Finally, see "EMAIL ADDRESS PATTERNS" in the access(5) manual. http://www.postfix.org/access.5.html -- http://rob0.nodns4.us/ -- system administration and consulting Offlist GMX mail is seen only if "/dev/rob0" is in the Subject:
