Apache Friends Support Forum

I am useing the XAMPP full package with mercury mail installed, I can get everything but MM to work right, when trying to send mail from a PHP script I get no errors on the script it self but then when I go to the email box I set it to (tryied both a hotmail and a yahoo mail to send to) I dont have the mesage there, so I went back to MM and the only error like thing I found in the MM server is

Temporary error 249 (temporary MX resolution error) resolving 'yahoo.com'.

is there something I have misconfigured in MM that is causeing this? and is there a simple way to fix the problem?

thank you for all your potential time and help on this subject in advance