some more thoughts on data collection
Some good suggestions already. Have
you resolved the issue?
The delayed messages aren't being transferred
for some reason.
"tell router show" will show the status of any transfer queues.
Could be some destinations in Retry because of a transfer failure.
If in retry, check your
Initial transfer retry interval on the Router/SMTP->Restrictions and
Controls...->Transfer Controls tab of the configuration document. Consider
lowering this. Default is 15 minutes.
"show tasks time" will show current transfers and how long they
have been active. Could be slow transfers to some destinations