An easy fix for " corrupted: map_uid=xxxx refcount too low"?

Timo Sirainen tss at
Tue Oct 28 00:12:38 UTC 2014

On 26 Oct 2014, at 05:28, Ralf Hildebrandt <r at> wrote:

> Is there an easy way of "fixing" these?
> Oct 26 13:24:52 imap(account at domain): Error: mdbox map /var/mail/domain/account/mdbox/storage/ corrupted: map_uid=2700 refcount too low
> (dovecot 2.1.17)

If they don't fix themselves .. I think the easiest is to access the mailbox with a newer Dovecot version (you could build v2.2 to /tmp/dovecot or something). For example read the mailbox with doveadm.

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