When trying to change mail settings ( 'Mail' tab > 'Change settings' > confirm changes with 'OK' ), the following error occurs:
Operation failed
The operation you were performing failed. You can retry the operation with or without changing its parameters. You may also want to report this problem to our support so that we could help you as soon as possible.
MEAOSM.Domain.GetDomain failed
(Error code 1)
This is caused when Mailboxes became corrupted after upgrade.
You can fix this issue by
1. Open MailEnable CP (Start > All Programs > Mail Enable > MailEnable Administrator).
2. Go to Messaging manager > Post Offices and remove post offices that cause error.
3. Run "%plesk_cli%\mchk.exe" --all --fix=all
