> > > On what basis could a mail server decide which hosts it > > > is going to allow to connect to it? > > > > ip addresses mostly... > > Could you expand on this? How would a mail server decide > which IP addresses to block? Why would it suddenly decide > that it doesn't like mine? :)
Mail servers can be set up to check the anti-spam group's (RBL ?? or is it RBS ??) database for "bad" IP addresses. They maintain a list of mail servers that they have either found to be "open" or allow relaying. If your IP address has been flagged, this could be a reason. Regards Hall
