On this page at fatCow:
read_article.bml?kbid=1610
I see they want to use port 587.
in the WA_Universal_Email/WAUE_contact_1.php file, find the following line:
$WA_MailObject = WAUE_Definition("".($WAGLOBAL_Email_Server) ."","25","","","","");
and change it to:
$WA_MailObject = WAUE_Definition("".($WAGLOBAL_Email_Server) ."","587","","","","");
or leave the port setting blank:
$WA_MailObject = WAUE_Definition("".($WAGLOBAL_Email_Server) ."","","","","","");