On 03/07/13 18:40, Benny Pedersen wrote: > John Fawcett skrev den 2013-07-03 03:21: >> dnsbl's are a popular method to prevent listed ips from making >> connections to mta software. > > hmm are pop3/imap clients not authed users ? > > well done > in this case no, I am talking about connections from zombies.