Same issue on previous 8.0.2 and now on upgraded 8.0.5
Running Ubuntu 10.04 LTS 64-bit
The Workaround for 8.0.2 from http://www.zimbra.com/forums/announc...1-8-0-2-a.html helped in my case, but doing so would break Zimbra's default protection measures, which I do not like. Bugs are already opened, I think from 7.2 version more than 1 year ago, some community workarounds published, but no real patch from Zimbra officially.
just upgraded 7.2.6 to 8.0.7, seeing the same error.
out of office stopped working as well
what's worse, I've tried to disable DoS protection according to the guides, and it has no effect.