[SOLVED] strange mail problem hello my clients transferred their hosts from hostgator into my server. After that their mail accounts cannot send/receive mail through outlook2003, 2007, thunderbird...etc however they can login mail account through webmail and send/receive mail too. I asked them to create new mail account. They did it and test that new mail account works without any problem. But their mail accounts(used in hostgator) keep throwing error that "cannot login pop server". I have to fix this mess or my clients will go somewhere else. Any help is very much appreciated.