Moved from 104.11 to 10.5.2 php email feedback forms don't work now

Question

Just moved from 10.4.11 to 10.5.2 with default Apache2 and PHP versions as provided by the 10.5 Server installer.
We have a simple web site, static pages, integrated filemaker content, and a couple of php scripts.
Our simple slideshow scripts work fine. Our feedback scripts do not.
User fills in the form and hits send which is set to post the field content to the php script with in turn sends an email to the appropriate address and then calls a "thank you for your submission" page. Until this OS change the browser never does anything other than what is described above. With the OS change the browser now looks like it is trying to load the script page and then gives this error:
"Safari can’t open the page “http://www.wetzelandson.com/feedback.php” because the server unexpectedly dropped the connection, which sometimes occurs when the server is busy. You might be able to open the page later."
The script runs some checks for empty fields, incomplete email address and verify that a mail server is on the domain for the users email address. The script works, diverting to error pages as needed, until the user puts in a complete email address at which point it stalls, shows that the browser is trying to load the php script and shows the message.

Answer 1

Figured it out.
I guess something about the new php in 10.5.2 does not like the verification of an mx server at the domain of the users email
commented the following and script works fine now, it worked until I changed from 10.4.11 to 10.5.2.
I guess that this command is no longer valid.
function validateemail($email)
list($userName, $mailDomain) = split("@", $email);
return checkdnsrr($mailDomain, "MX");
if (validateemail($email))
*/