I have been using BigPipe UFB for over a year now, never any problems, and have been running my own email (Exchange) server for longer. However the other day I asked for a plan change (from 200/200 to 200/20) and since then I have not been able to get any email.
My static IP address hasn't changed, and using mxtoolbox I can see that neither my public IP or DNS is resolvable to port 25.
Has BigPipe change policies on this? Or is it just a side affect of the plan change?
(Yes, I have raised a support ticket with them, however since they cannot email me back, I thought it best to post here too ;- )