My company is running on the below version for quite a while. Everything was fine until today.....

Release 7.1.3_GA_3346.UBUNTU10_64 UBUNTU10_64 FOSS edition.

We noticed that the server is running out of space, and so we wanted to housekeep some file. Not much stuff could be deleted, but we still try to start up the service like as usual... then we have the error:

antispam Running
antivirus Running
ldap Running
logger Running
mailbox Stopped
zmmailboxdctl is not running.
mta Running
snmp Running
spell Running
stats Running
zmconfigd Running

We have followed so so so many of tips from the forum, but somehow unable to start up the zmmailboxdctl service....
can anyone help to troubleshoot this?

this is the only one email service we have, and we are very very desperate now..................