Our server is Fedora core 7 and Zimbra 5.3 fresh install. We can access our email with no problem over the world wide web but we cannot access our email using pop3 connection.
I went into the admin side and verified that pop3 access is allowed for the user and still no luck. I keep getting an authentication window but not able to authenticate. Zimbra desktop works just works also, but again pop3 and Imap will not work and I'm totally stumped. Any suggestions as to what could be the problem?