I'm experiancing some stange problems with the pop3 mail server on an ISPConfig system.
If I setup a pop3 account in something like outlook, and I hit "send and retrieve", I get the mail. But it I setup another email account in outlook for another address e.g firstname.lastname@example.org
and hit "send and recieve" I get the following message:
Receiving' reported error (0x800CCC0F) : 'The connection to the server was interrupted. If this problem continues, contact your server administrator or Internet service provider (ISP).'
But what is wierd is that if I tell outlook to retrieve the mail of just the one user that just failed, I get the mail fine. I have multiple clients having the same problems on a variety of different domains.
I've checked the /var/log/maillog fine and it logs this when I get the error in outlook:
pop3-login: Disconnected [::ffff:22.214.171.124]
I can't seem to see what is causing this? I've changed the smtpd_tls_loglevel setting to 3 in the main.cf file but that doesn't seem to show any more information. Any ideas?