I'm having some pretty big issues adding an external account to a fresh installation of Zimbra (7.1.1).
I've confirmed that the mail server responds to both POP3 and IMAP communications with another mail client (Thunderbird, to be exact). When I attempt to add the external account, however, in Zimbra the GUI remains stuck in the "testing" phase and never completes.
On the mail server itself I see that Zimbra has connected on port 995 (POP3 + SSL), requests the contents of the Inbox, and then logs off. In the mailbox.log file (on the Zimbra server), I can see that the test was successful.
I'm not sure where to go from here. I've installed an older version of Zimbra (7.0.1) and did NOT have this problem at first. However, after importing my email from a raw .tgz Zimbra account backup, the issue resurfaced. Nothing I seem to do gets the external account to go past the "test" phase.
Any help would be greatly appreciated...I'm out of ideas and am running out of hair to rip out.