I recently went through 3 different webhosts and went through the same problem with all fo them. That is trying to get their imap to play well with mac mail. I currently have one that works fine except for one problem. It doesn't consistently read messages well because it says it can not connect to the server. The problem is that sometimes it works and sometimes it doesnt' and this is with multiple domains and their addresses. There is no pattern to it. For example one domain has 7 addresses associated with it. 4 aren't connected and two are and the setting are the same. furthermore i'm using this with 3 devices, iphone, imac, mbp, and have the same randomness in functionality. I have contacted the webhost and they say their imaps ports are working fine...I don't know why this is such a problem.The last host i had I couldn't even connect to their imap servers from mac mail at all. Is there something else i can check.