Hi Dharma,
Thank you for getting back to me.
Because they're on a shared server, the web host would not give them access to the error logs. However, they did send some of the error logs. Below is the reply from the web host support. I've also included the server error message.
As you are on a Shared server environment we cannot provide the server logs directly to you.
I see a bunch of errors in the Apache error log that are for one of your domains, I'm guessing your Perl script does not have sufficient permissions to run or is erroring in some other way:
[Tue Jul 26 13:33:30 2016] [error] client 173.61.46.27Permission denied: exec of '/web/sites/sgvarn/clubsupplies.com/cgi-bin/email/FormMail.pl' failed, referer: https://www.clubsupplies.com/orderforms_rtbadge.html
[Tue Jul 26 13:33:45 2016] [error] client 173.61.46.27Permission denied: exec of '/web/sites/sgvarn/clubsupplies.com/cgi-bin/email/FormMail.pl' failed, referer: https://www.clubsupplies.com/orderforms_rtbadge.html
[Tue Jul 26 13:34:02 2016] [error] client 173.61.46.27Permission denied: exec of '/web/sites/sgvarn/clubsupplies.com/cgi-bin/email/FormMail.pl' failed, referer: https://www.clubsupplies.com/orderforms_rtbadge.html
Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator, webmaster@clubsupplies.com and inform them of the time the error occurred, and anything you might have done that may have caused the error.
More information about this error may be available in the server error log.
Apache/2.2.22 (Debian) Server at www.clubsupplies.com Port 443
Thanks again.