On Tue, 7 Aug 2012, dovecot-request@dovecot.org wrote:

When switching to port 995 to use pop3s he is limited at connection count. Some people can reach pop3s-server successful, some getting a timeout. ... Somebody knows some typical clientside problems when this problem occurs?

Do the same user(s) have this problem and/or do each user have their own mail configuration for their mail readers?

If yes, I would also check that the port and security protocol matches (i.e. clear/TLS/SSL on ports 110/110/995 respectively). Mismatched configurations could cause what you describe.

Log messages could also be helpful here.

Joseph Tam <jtam.home@gmail.com>