Just been upgraded to BB XL, and am now getting the above SMTP errors coming back at me. Al was fine earlier this evening, but have just rebooted my modem to get the new config file, which is 10meg, not 20

and now getting the SMTP errors. Any particular reason why ??
Full error is:
ntlworld.com #5.5.0 smtp;550 you are not allowed to send mail to
I am relaying my mail from my SBS 2003 Exchange server into smtp.ntlworld.com
Has the server name / address changed at all, and why would it only stop after the upgrade ????
Cant get into webmail, is this all linked to their national email outage ???
Please help i cant have my house down for outgoing email.
Just noticed that since 19:45 when i rebooted the modem, my SBS pop connector has not managed to connect to get my mail, WTF is going on now.
Also i cannot log into my account on the vigin media website, tells me invalid username or password
Now getting very very ****ed off