Received from dgrass1@... at 10/30/2018 03:43 PM UTC:
I'm still going to contact my ISP, but I thought I would update this slow down of emails using the analyzer.
Many emails get slowed down for as much as three days going from ec2-35-174-158-239.compute-1.amazonaws.com to mx.cox.rs.oxcs.net, and many are also slowed down from web01.groups.io to cmsmtp ...the last one for four days.
This info would be much more informative, and subject to further analysis, if you would post the raw results of the analysis, or preferably the complete original headers.
Jim H