I have an exchange server that is fine sending emails to most people but we have one company that have their own domain name with associate email addresses hosted on a Linux server that we have suddenly got problems emailing. What happens is the message leaves the users inbox but then sits in the exchange queue for 2 days and then the user gets a message like this:
Your message did not reach some or all of the intended recipients.
Subject: RE: Paypal Cheque notification
Sent: 16/06/2008 11:43
The following recipient(s) cannot be reached:
Julie H on 18/06/2008 11:53
Could not deliver the message in the time limit specified. Please retry or contact your administrator.
Thanks in advanced,