Sid_M "Test emails bounce back even though I am paying. "
Those bounce back messages will give the reason the email could not be delivered - so what do they say? That will be a big clue as to what's wrong.
If you look at a bounce back message, after a few lines of text there will be a line that says:
"The following addresses failed:" and then there will be some more text.
For example, it may well say:
"MXIN501 mailbox xxxxx@virgin.net unknown"
Does it say that your email address is unknown or something else?
If it says the mailbox is "unknown" it means that your virgin.net account no longer exists.
If it says something else then post here with what that line says but do no not post your virgin.net email address.
Coenoby