hi ...

does your site support smtp
what are the settings
http://colombia.x10.bz/contact.html

Error sending email: Could not instantiate mail function.
Warning: Cannot modify header information - headers already sent by (output started at /srv/disk6/891539/www/colombia.biz.nf/MachForm/includes/helper-functions.php:482) in /srv/disk6/891539/www/colombia.biz.nf/MachForm/embed.php on line 42

kind regards
-margarita-