When I tried to send email to a specific email domain from my company to external emal address, it is not getting through on the same day.
Instead i get this error message:
Delivery is delayed to these recipients or groups:
This message hasn't been delivered yet. Delivery will continue to be attempted.
I can see that there is no problem with Exchange Server 2010 email queue or any other email domain, but just to this one and some other ones.
So how can I verify that it is not our email infrastructure problem ?
Where to start for the troubleshooting ?