Usage: check_mailq -w <warn> -c <crit> [-W <warn>] [-C <crit>] [-M <MTA>] [-t <timeout>] [-v verbose]

   Checks the number of messages in the mail queue (supports multiple sendmail queues, qmail)
   Feedback/patches to support non-sendmail mailqueue welcome

-w (--warning)   = Min. number of messages in queue to generate warning
-c (--critical)  = Min. number of messages in queu to generate critical alert ( w < c )
-W (--Warning)   = Min. number of messages for same domain in queue to generate warning
-C (--Critical)  = Min. number of messages for same domain in queue to generate critical alert ( W < C )
-t (--timeout)   = Plugin timeout in seconds (default = 15)
-M (--mailserver) = [ sendmail | qmail | postfix | exim ] (default = sendmail)
-h (--help)
-V (--version)
-v (--verbose)   = debugging output


Note: -w and -c are required arguments.  -W and -C are optional.
 -W and -C are applied to domains listed on the queues - both FROM and TO. (sendmail)
 -W and -C are applied message not yet preproccessed. (qmail)
 This plugin uses the system mailq command (sendmail) or qmail-stat (qmail)
 to look at the queues. Mailq can usually only be accessed by root or
 a TrustedUser. You will have to set appropriate permissions for the plugin to work.