15.11.2010 14:08, Ignacio García wrote: > Hi there... > > I'm having a problem with one of our servers. We have been blocked by > CBL because one of our customers have been sending many emails recently > from his php-based bulletin system. This system does not send lots of > emails (it's programmed to send 1 email each 10 seconds), but they have > more than 3000 email accounts in their database, and maybe half of them > are wrong, have typos, etc [...]
Is it postfix who delivers these probes to final destination? This is a very important question. CBL does not work like that, it blocks hosts that behaves badly - like violates SMTP protocol, uses invalid/non-FQDN HELO hostname, breaks ESMTP pipelining and so on and so worth. CBL does not list you because you typoed some receipient email addresses, even if you did quite a lot of such typos. How do you know these PHP bulletins are the reason for your CBL listing? Asked them for details already? Take care. /mjt
