For me this is a major fail I havrelayeded on this from O2 for as long as I have been with them. I will be moving from O2 and finding a solution to sending e-mail that no ISP or Mobile provider will be able to block.
RIP O2
Steve
Well news is O2 don't seem to know what the issue is I just got told by first level support that it was not accessable from outside O2's network? but it is again I suspect I was being given a line...
Steve