after a nightmarish couple of days with this, we got round the issue by signing up to SMPT2go.com - doesnt matter which ISP you use or which domain name email you use - sends anything to anyw ...
Been using freeserver/orange broadband for years. Never had any issue using smtp.freeserve.co.uk to send our own domain specific emails. Just today for no reason whatsoever it has decided to stop al ...