On Sun, Apr 24, 2011 at 07:15:34AM +0530, Rajesh Kumar Mallah wrote: > We allow relaying of email via our server to our clients using authentication. > The problem is that some miscreants have got hold of our clients password > and are using our email server to send SPAM after successfully authenticating.
Change passwords immediately. Educate users that the have to keep their passwords private. > I was thinking in lines of enforcing policies on even authenticated smtp > clients > that are pumping SPAM . Eg restrict clients not to send more than 10 emails > per minute , etc. This is a different policy. This can be implemented using postfwd. Bastian -- Oblivion together does not frighten me, beloved. -- Thalassa (in Anne Mulhall's body), "Return to Tomorrow", stardate 4770.3.