I've been having problems where users would send outgoing emails with attachments and the email server would stop responding. In these situations, the only way that I've seen to resolve it is to reboot the entire server. A simple /etc/init.d/zimbra restart would not suffice. The version of zimbra I've been using on this server is 4.5.10, but it has been upgraded since 4.5.6 I believe. The server's OS is SLES 10. (However, to note, there wasn't a version of Zimbra cerified for SLES10 for the 4.5 series.)
Has anyone else experienced this problem?
Now, in order to correct the situation, I recently installed Zimbra 5.0.2 onto a new server that had a fresh copy of SLES10. I made sure I downloaded the correct version of zimbra and immediately experienced the same problem as described above. Hardware isn't the cause since I've tried two entirely different machines, and I've done ping tests across the network to check to see if there was packet loss. The only thing left I've narrowed down to is the OS itself. I've been running Zimbra on a home email server on Ubuntu 6.06 and it runs flawlessly. The reason why I would say it's an OS issue is because on the new server that I had zimbra installed, it would immediately stop responding on port 80, through SSH, and even on the local keyboard/monitor. To be frank, I'm completely baffled.
Can anyone provide advice on how to proceed?