Problems sending email to my ntl address

[jameseyre1]

Hi,

I seem to be having a problem sending mail from my work account to my ntl account - this undeliverable message appears. The weird thing is that I get the email in my ntl inbox, despite this message?! Does anyone have any idea what the issue might be?

Thanks,
James

Your message did not reach some or all of the intended recipients.

Subject:

The following recipient(s) could not be reached:

myname@ntlworld.com on 13/07/2006 14:15
The e-mail account does not exist at the organization this message was sent to. Check the e-mail address, or contact the recipient directly to find out the correct address.
< mtain01-winn.ispmail.private.ntl.com #5.1.1 smtp; 550 Requested action not taken - Sender not allowed>

[Toto]

Looks like the domain you are sending from is being blocked at ntl's border router.

Might help to know the domain youare sending from.