50MB Port 25.

Do virgin block port 25? I have setup a mail server on my network. I relay outgoing mail through smtp.ntlworld.com and that is delivered fine. However if I reply to that mail it never comes back. DNS is fine (A / MX records) but looking here

http://www.canyouseeme.org/ for port 25 it is blocked? My router is forwarding 25 to my mail server so the only conclusion I can come to is that VM have blocked it?

Can any confirm / deny or test?

my bad. port 25 is fine. a tick in a radio box on my mail server had alluded me.

I don't know about 50Mb but they don't block it on my 20Mb