Please help. I have a similar problem. I can't access my POP through mail account while I'm behind a proxy, nevertheless taht same account works fine on Entourage behind the proxy, so proxy settings seem to be ok. I haven't been able to to make Mail work behind this proxy (works fine a regular connection) either on Panther or my recently installed Tiger. What am I doing wrong?
Has someone been able to make Mail.app work behind a proxy?