Integrity check of mailboxes before dsync

[Murray Trainer]

Hi All,

I am migrating a large number of Dovecot mailboxes - some of them are
quite old.  I hit an issue yesterday with a corrupt file (index?)
that was preventing the mailbox from being synced properly  As soon
as I removed the file the dsync worked.  Is there a way to check the
integrity of each mailbox / indexes before I dsync it?   

Thanks

Murray