command line
zimbra command line
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To display trouble logs
#egrep '(reject|warning|error|fatal|panic):' /var/log/zimbra.log
To check if no smtp connection
#netstat -nplt | awk '{print $4 " " $6}' | egrep "[0-9]+.[0-9]+.[0-9]+.[0-9]+:25" | egrep "ESTABLISHED" | wc -l
To see the postfix queue (as zimbra user)
#sudo ~/libexec/zmqstat
#postqueue -p
or
#mailq
To view message postfix queue
#postcat -q C12E6246BC | more
Tunning postfix queue
To check and reconfigure queue lifetime
$postconf | grep maximal_queue_lifetime
maximal_queue_lifetime = 5d
$ postconf -e maximal_queue_lifetime=15m
To check and reconfigure deferred queue parameter
$postconf | egrep "queue_run_delay|minimal_backoff_time"
minimal_backoff_time = 300s
queue_run_delay = 300s
$ postconf -e queue_run_delay=2000s
$ postconf -e minimal_backoff_time=2000s
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