I have a user who sent an email to three internal users at 1143 hours, but that email was not delivered until the following day at 0605 hours, and the sender wants to know why there would be such a long delay. All four users (the one sender and three recipients) are in the same domain and post office, and a GWCHECK on their accounts doesn't show anything unusual. The message size was less than 2K, and there were no attachments.

Any idea why it would take nearly 18 hours to deliver or what I can look at to see for myself? Thanks.