Have you made any progress on this?
I am thinking about migrating from FC5 to RHEL, but I don't think I will do a complete tar of my current /opt/zimbra
I think I am going to pick and choose what I take over and I believe anything to do with clam and dspam I will leave behind. I think that last time I did this type of shuffle from FC3 to FC5, I did not take those directories as they appeared to not upgrade/migrate properly and there should really be nothing needed from them.
So you could try that. Migrating again, but leave the mods causing you grief out of the migration solution.
Just an idea with no gaurantees.
"Let's look at this from a standpoint of "Status". What exactly, on the Space Craft, IS working?"
-Flight Control, Apollo 13