We work with various different schools and businesses and constantly get tickets from users entering their domain name wrong when typing their email. Previously on our old help desk system we were able to use the following code to perform a DNS A or MX record lookup to validate the domain, do we think this could be coded into osTicket somehow?$email = $_REQUESTlist($UserName, $MailDomain) = split("@", $email)checkdnsrr("$MailDomain." . ".", "A") || checkdnsrr("$MailDomain." . ".", "MX")If the output comes back good then the domain exists and create the ticket, else pop an alter to ask for the user to check the domain name.