Hello, usuario, I think I have found a solution (if you still need it), here you are: It took me the whole night to discover that it is the file wp-mail.php that is the so called mail() function… so, what I did: I did a text string search in the files of my WPMU and substituted every occurence of “wp_mail” for “ultramail”… too easy! Oh, and I had to include “include_once(‘/home/folder/ultramail/ultramail.php’);” in every single page that called this new ultramail() function…
Quite a good challenge for a newbie ??
Thank you.