Hello, Noel Jones wrote: > The above is the result of a postfix reject_unverified_recipient check. > The double_bounce entries you see are address probes. In other words, > these are not in any way related to your problem.
oook, thanks! > Since you so far haven't shown anything remotely suspicious in your > postfix config or logs, most likely you have some virus infected client > machines that are sending mail direct to the recipient's MX - *not* > relaying through your postfix. Happy to hear this: I suspected something like that but I wasn't sure... now I made some tests and I found a windows user with a workstation full of trojans. I sanitized the pc. I don't know if it was the real problem but a clean pc is better then a sick one... > The first thing you must do is make sure that your border firewall or > router prevents outgoing connections to destination port 25 for everyone > except your postfix box. Then at least an infected machine can't spew > its payload. That was the real problem! There wasn't no rule on my firewall regarding outbound connection towards smtp port. I fixed this and spotted on the log some workstations using other mailservers rather then mine. > At this point, your problem doesn't appear to be a postfix problem, nor > something that can be addressed in postfix. Many thanks to you all for your help. I greatly appreciate it! Now let's see what's gonna happen with spamcop (who tagged my IP) in next few ours. Thanks, again! Ivan -- Ivan Ricotti ------------------------------------------- eLabor sc - via G. Garibaldi 33, 56127 Pisa tel: +39 050970363 web: http://www.elabor.biz email: i...@elabor.homelinux.org GnuPG KeyID: DFD581C5 - 13/11/2003
