Reply emails from shopping cart

[craigdthom]

I just installed the shopping cart and finally cleared all the pink background headers ...

 

I am getting the error message below when I attempt to use the contact page.

 

It looks like there is a problem with the mail(guess)

Does anyone have an idea at how to fix this!!!

Any help would be greatly appreciated

 

 

 

Warning: mail() [function.mail]: SMTP server response: 501 5.5.4 Invalid Address in D:\home\sitenum\catalog\includes\classes\email.php on line 522

 

Warning: Cannot modify header information - headers already sent by (output started at D:\home\sitenum\catalog\includes\classes\email.php:522) in D:\home\sitenum\catalog\includes\functions\general.php on line 33

 

Thanks in Advance

Craig