01-30-2008, 08:55 AM
Join Date: Sep 2005
Location: Congested Islet of "Foreign Talents" (> 45% of workforce) - Singapore.
Post Thanks: 6
Thanked 9 Times in 9 Posts
Good thing that the address lookup is not non-responsive but just a delay of 1 minute. If I were you I will only worry about it if the lookup returns nothing or timeout.
The cause may be due to the additional probe to the other active cluster member mail server that cause the additional delay; which in turn adds more load on the thread pools that serve the assigned mail servers.
Check to see if there are hung threads in the MAGT log file (keyword is "No Response"). I would suspect that there are some and they are with WaitCount of 1 and 2 but they eventually recovered.
Native but 4th class citizen of a nation governed by idiots who import congestions & contention.