Ok, not that dns outages should ever happen, when they DO happen, it seems to break the zimbra server... and only ever comes back up after a few reboots (no, the zmcontrol stop start doesnt actually bring it back online)

This is a 4.0 server that I am in progress of planning migration to 4.5.6 or 4.5.7, but wondered if I might be missing a setting or something? Seems kinda tempermental and fragile.

Any pointers would be greatly appreciated.