Friday, October 14, 2011

Error writing message: File too large

A postfix error that occurs when a user's mailbox is full.
Regularly caused by cronjob output, particularly when there are systematic errors in the cron job that lead to long and frequent email reports.

mailbox_size_limit and virtual_mailbox_limit may be relevant.
You can use
postconf | egrep '(mailbox_size_limit|virtual_mailbox_limit)' see what size they are currently set at, which is probably 50MB.

Set this to a higher limit (in your .cf files), or even to 0 to remove limits.