Website form error message - Mail could not be sent...

[Tech0810]

I have a PHP issue which I do not know anything about but must troubleshoot; our company website has a page where visitors can submit their resume along with entering a few fields such as Name, Email, phone number, etc.  The issue lies within submitting the information. The page loads:

“The following errors were found:

• Message could not be sent due to an error while trying to send the mail.

PHPFormMail has experienced errors that must be fixed by the webmaster. Mail will NOT be sent until these issues are resolved. Once these issues are resolved, you will have to resubmit your form to PHPFormMail for the mail to be sent.

 

PHP Notice: Undefined index: alias_method in C:\Inetpub\wwwroot\scripts\FormMail.php on line 405 PHP Notice: Undefined index: alias_method in C:\Inetpub\wwwroot\scripts\FormMail.php on line 405 PHP Notice: Undefined index: alias_method in C:\Inetpub\wwwroot\scripts\FormMail.php on line 405 PHP

Notice: Undefined variable: return_path in C:\Inetpub\wwwroot\scripts\FormMail.php on line 429 PHP Warning: mail() [function.mail]: Failed to connect to mailserver at "mail.envstd.com" port 25, verify your "SMTP" and "smtp_port" setting in php.ini or use ini_set() in C:\Inetpub\wwwroot\scripts\FormMail.php on line 453 [phpFormMail] Mail could not be sent due to an error while trying to send the mail.

 

I tried doing some minor suggestions such as load a previous backup copy of the FormMail.php file – but that didn’t work; examined the code in the current and past FormMail.php file and they both look identical. So it's not the code that is wrong, it has to be something else, right?

I will talk to the Sys Admin about the firewall and exchange server, but in the mean time what other suggestions do you guys think I should try to troubleshoot?