There are no open relay connection on my mail server and my MC external.
Last time I had a blacklist problem, there wasn't a lot of mail sent or relayed on the MC and on my mail server.

Hi;

I use to MailCleaner both for sending and receiving mail. Mailcleaners External ip address been blacklisted a lot lately.(spamhouse, zen, CBL, etc.)

where am I doing wrong ? what I need to check ?