During the affiliate signup process, the current system will only allow email addresses with traditional domain names to be validated. Update your system with this file and you will enable iDevAffiliate to accept a domain with an extension of 6 characters such as someone@website.travel.
To apply this functionality, download the file below. Unzip it and upload the file (validate.php) to your /idevaffiliate/includes/ folder. Allow the file to overwrite the existing (validate.php) file.