3Pay SIM on APN three.co.uk. Has anyone any experience with them blocking
some ports? It appears SMTPS (I think that's port 465) is being blocked -
but I'm trying to diagnose this over the telephone so am not sure what's
going on. Are they trying to force you into using 3Mail?

Do they block other ports? I thought they were fairly lax, but port 24
didn't seem to work either.

Thanks
Theo