Sorry but the ongoing issue with failed mail from Harrier server goes on and on !!
We appear to be back on the blacklists again. I cannot even

reply to your mail on the ticket raised as you are blocking your own mail!!
I now have some seriously p***ed off customer who over the last week have been unable to exchange mail with hotmail / live.com accounts & blue chip companies who subscribe to anti spam blacklists.
Please sort his out urgently - you cannot run a business without reliable email !!!
Chris.