[MrBen]

Hi Tony,

Basically Yahoo! have had a fair few of their servers blacklisted by SORBS [for sending spam].

ntl: use SORBS and a number of other lists to reject email to try & reduce the amount of spam received by it's users.

Only Yahoo! can get their servers removed from the SORBS list and as soon as they are removed from the list there should be no problem sending email to ntl:.

Hope that helps,
Ben