what we did after several failed reinstalls...
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1. complete Zimbra uninstall -
http://wiki.zimbra.com/index.php?title=UnInstall_Zimbra
2. Zimbra clean install and running zmcontrol stop
3. override with the backup
4. reinstall Zimbra (that's the part we had to do to come to the original problem, which was OutOfMemoryError in logs and INVALID_PDU in web UI)
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5. as user zimbra, run
zmlocalconfig -e tomcat_java_heap_memory_percent="50"
6. ZimbraAdmin had some mail queue problems after that, error system failure: exception during auth
7. as zimbra, run
zmsshkeygen
zmupdateauthkeys
tomcat restart
works fine so far... except the pop3 mess of course.
