I have UCS 4.2 acting as domain master, dhcp, dns. I have 20 UCC clients and 5 Windows. From a few days to now, a thunderbird timeout problem occurs only in the UCC, on Windows machines, thunderbird works fine. I’ve done a check in all configurations, I could not detect anything abnormal. Strange that in Windows works ok. The problem occurs only in equipment with UCC. If you insist, and open and close thunderbird several times, sometimes it works. Most of the time, the problem of timeout, both to receive when to send. I’ve tested another email client on UCC, Evolution, and there’s also the same problem. By testing with ping and traceroute, the response times of the mail server are normal. He repeated that Windows clients work normally, the problem only occurs in UCC clients.
Do you think that any configuration in UCS could be causing this problem in the UCC?