Upgrade 5.0.xx to 6.0.xx breaks mailbox

[iway]

Just a quick info for htose of you running into the same problem:
We upgraded from 5.0.19 to 6.0.6.1 this weekend, which broke one user's mailbox.

Error during mailbox access: Mail: system failure: invalid value for flags: 134217728

Resolution: Bug 42534 – invalid value for flags: 134217728


C.

[iway]

I did open a support case and the issue was resolved by the tip from support about the bug.
It definitely exists in 6.0.6.1, since we upgraded from 5.0.19 to 6.0.6.1 directly.