This documentation is for Dovecot v1.x, see wiki2 for v2.x documentation.

Reading problems

Error indexing mbox file /var/mail/user: LF not found where expected

This happens with Dovecot v0.99.x when there are multiple From-lines in row in the mbox, ie:

From some@one  Wed Jan  5 09:03:48 2000
From another@one  Wed Jan  5 09:09:25 2000

This shouldn't normally happen, and it's not good in any case to have them. Deleting one of them fixes the problem. Dovecot 1.0 releases don't have this problem anymore.

Corruption problems

These are usually related to incompatible locking settings between all programs accessing the mboxes. Make sure they use the exact same locking methods.

Empty line at the beginning of mbox

This is an unsolved rarely occurring bug in 0.99.x Dovecot versions. Use 1.0 releases instead.