Hello,
A users is complaining she doesn't receive a certain e-mails. I check the usual stuff, anti-spam, see if her Outlook is connected etc.
Everything checks out, when I check message tracking I see the mail is delivered to Exchange but Exchange can't put it in her mailbox and reports the following: Message delivery is taking longer than expected. There may be system delays. For more information, contact your helpdesk.
After reading several threads I get something about diskspace but this machine (and the location of the queue and databases) has 50GB+ free space and reside on the same machine. I have also installed the update rollup 10 for Exchange 2013 with a few reboots but this doesn't seem to help.
This only seems to happen to specific messages. No strange eventlog messages are generated.
Exchange 2013 with the latest updates + Rollup 10
Server 2012 Std. 64-bit