500 sendmail exit with error message

This error displays an exit status and error message from the sendmail command. Many errors will be self explanatory. Others will require looking at the sendmail manual page.

If you are using Roxen Challengertm, you might get an error like this:


No email was sent due to an error.

500 sendmail exit 256 with error message

QUERY_required-email=eee: is not an identifier

cgiemail 1.2

The solution is to turn off Roxen Challenger CGI Enhancements.