The two files represent the two email server behaviors on the page. I'm suggesting deleting the second one.
Try updating line 18 from:
$WA_MailObject = WAUE_Definition("smtp.scimontreal.com","2525","SCI","","","UTF-8");
to:
$WA_MailObject = WAUE_Definition("","","","","","UTF-8");
Most hosting providers will have the correct SMTP settings defaulted in the php.ini file, so leaving the values blank will work. It could be the smtp server you had specified isn't configured for outgoing mail from a web site.