Upgraded from 5.11 to 6.01 over the weekend. If a user sends a mail message with Confirm Delivery selected under Report Options they get the following failure report.
'Your message was successfully relayed by
servername.com to remote mail system ip#. Outbound support for confirmations is not
configured.’
This was working fine before the upgrade. Any ideas on what needs to be configured now???
Any input is greatly appreciated.