Thank you again for your feedback on this issue. I watched the workload in real time this morning and now have more insight into what is happening. It appears the large ISPs are using TLS connection as a way to throttle incoming traffic. I looked at the inbound mail queue and found most of the traffic going to gmail.com. I believe this is because of the 20 & 25 seconds delays google.com is injecting into the TLS connection. I can also see no delays for the smaller ISPs with little traffic. Please see some data below.
Best, Greg This is a sample of delays= for google.com -- 20 and 25 second delays: 0.01/11/20/0.73, 0.01/9.5/20/0.77, 0.01/0/25/0.74, 0.01/7.6/25/0.91, 0.01/6.9/25/1.1, 0.01/13/20/4.6, 0.01/14/25/0.56, 0.01/14/25/1.1, 0.01/0/0.22/0.72, 0.01/0/0.39/0.79, Here are delays= from yahoo -- 5.3 second delays: 0.01/0/10/4.1, 0.05/0/5.1/0.95, 0.01/0/5.2/0.68, 0.01/0/5.3/0.57, 0.01/0/0.45/0.42, 0.01/0/5.3/0.42, 0.01/0/5.3/0.34, 0.01/0.39/5.1/0.73, 0.01/0/1.2/2, 0.01/0/5.3/0.34, And from icloud -- little delay: 0.01/0/0.14/2.5, 0.01/0.02/0.15/2.7, 0.01/0/0.34/11, 0.01/0/0.13/4.9, 0.01/0/0.06/4.1, 0.01/0/0.13/1.5, _______________________________________________ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
