Nice one George. Mighty indeed 👍
Thanks, mate!
Good news, looks like BT has fixed it - eur03.safelinks.protection.outlook.com is now resolving properly.
Can confirm it is working now
I have a number of home workers who are still having problems which seems to be caused by the caching DNS server in their routers still having the poisoned DNS entry.
A restart of the home routers is now fixing this.