Our zimbra server getting slow and i found the below message in the log.Is there any way to increase the connection above to 50. The 124.124.41.117 is our gateway ip.
Sep 10 00:53:16 zimbra6 postfix/smtpd[1347]: warning: Connection concurrency limit exceeded: 51 from unknown[124.124.41.117] for service smtp
Sep 10 00:53:16 zimbra6 postfix/smtpd[1347]: disconnect from unknown[124.124.41.117]
Sep 10 00:53:16 zimbra6 postfix/smtpd[9058]: connect from unknown[124.124.41.117]
Sep 10 00:53:16 zimbra6 postfix/smtpd[9058]: warning: Connection concurrency limit exceeded: 51 from unknown[124.124.41.117] for service smtp
Sep 10 00:53:16 zimbra6 postfix/smtpd[9058]: disconnect from unknown[124.124.41.117]
Sep 10 00:53:17 zimbra6 postfix/smtpd[20665]: 51A58AD992C: client=unknown[122.173.58.38]
Sep 10 00:53:17 zimbra6 postfix/smtpd[1246]: connect from unknown[124.124.41.117]
Sep 10 00:53:17 zimbra6 postfix/smtpd[1246]: warning: Connection concurrency limit exceeded: 51 from unknown[124.124.41.117] for service smtp
Sep 10 00:53:17 zimbra6 postfix/smtpd[1246]: disconnect from unknown[124.124.41.117]
Sep 10 00:53:17 zimbra6 postfix/smtpd[9058]: connect from unknown[124.124.41.117]
Sep 10 00:53:17 zimbra6 postfix/smtpd[9058]: warning: Connection concurrency limit exceeded: 51 from unknown[124.124.41.117] for service smtp
Sep 10 00:53:17 zimbra6 postfix/smtpd[9058]: disconnect from unknown[124.124.41.117]
Sep 10 00:53:18 zimbra6 postfix/smtpd[28546]: connect from unknown[124.124.41.117]
Sep 10 00:53:18 zimbra6 postfix/smtpd[28546]: warning: Connection concurrency limit exceeded: 51 from unknown[124.124.41.117] for service smtp
Sep 10 00:53:18 zimbra6 postfix/smtpd[28546]: disconnect from unknown[124.124.41.117]
Sep 10 00:53:18 zimbra6 postfix/smtpd[26559]: connect from unknown[124.124.41.117]
Sep 10 00:53:18 zimbra6 postfix/smtpd[26559]: warning: Connection concurrency limit exceeded: 51 from unknown[124.124.41.117] for service smtp
Sep 10 00:53:18 zimbra6 postfix/smtpd[26559]: disconnect from unknown[124.124.41.117]
Sep 10 00:53:18 zimbra6 postfix/smtpd[1347]: connect from unknown[124.124.41.117]
Sep 10 00:53:18 zimbra6 postfix/smtpd[1347]: warning: Connection concurrency limit exceeded: 51 from unknown[124.124.41.117] for service smtp
Sep 10 00:53:18 zimbra6 postfix/smtpd[1347]: disconnect from unknown[124.124.41.117]
Sep 10 00:53:19 zimbra6 postfix/smtpd[1246]: connect from unknown[124.124.41.117]
Sep 10 00:53:19 zimbra6 postfix/smtpd[1246]: warning: Connection concurrency limit exceeded: 51 from unknown[124.124.41.117] for service smtp
Sep 10 00:53:19 zimbra6 postfix/smtpd[1246]: disconnect from unknown[124.124.41.117]