In the last 2 weeks, I have the imap server process that keep answering to TCP 143, as I am able to connect to it with telnet, but then after the connection; nothing. Like the process go zombie.
I check the /var/log/maillog but aside the last transactions that been log there no error.
However, everything else looks to work fine during the imap hang WebUI, mailbox, LDAP...
Restarting Zimbra resumed the issue but it happened for the third time in 2 weeks, so I'm afraid of a degradation...
I use Zimbra 6.0.6_GA_2330 on a RHEL 4 (Nahant Update 5)
Any hint where I can look to identify what went wrong.