OpenLDAP crash under barracuda query

The problem appear just after I installed a barracuda V400 and configured the LDAP verification for a valid recipients.

On the server the process just died. At the end of the log I was able to see things like this:

Jul 25 06:30:24 XXXXXXXXX slapd[8327]: daemon: read active on 94
Jul 25 06:30:24 XXXXXXXXX slapd[8327]: daemon: epoll: listen=7 busy
Jul 25 06:30:24 XXXXXXXXX  slapd[8327]: daemon: epoll: listen=8 busy
Jul 25 06:30:24 XXXXXXXXX  slapd[8327]: daemon: epoll: listen=9 busy
Jul 25 06:30:24 XXXXXXXXX  slapd[8327]: daemon: epoll: listen=10 active_threads=0 tvp=NULL
Jul 25 06:30:24 XXXXXXXXX  slapd[8327]: daemon: epoll: listen=11 active_threads=0 tvp=NULL
Jul 25 06:30:29 XXXXXXXXX  slapd[8327]: daemon: activity on 1 descriptor
Jul 25 06:30:29 XXXXXXXXX  slapd[8327]: daemon: activity on:
Jul 25 06:30:29 XXXXXXXXX  slapd[8327]:

I opened a case at barracuda support and after few check with their engineer they told me this was a known issue with the Exchange Antivirus.

So the solution they provided me was to disable the exchange antivirus, in our case this was not a problem, we just don’t have exchange.. I probably just havn’t seen this option during my initial setup..

 

So to disable this option go to ADVANCED => Exchange Antivirus:

Check the “No” radio button for “Enable Exchange Antivirus” to disable it. At this time our LDAP haven’t crashed since this change..