Trying to mail to work on a dev server for testing via sendmail.
I installed sendmail, ran through the sendmailconfig steps, enabled sendmail_path in php.ini, restarted lamp stack, cleared Drupal cache, and still no mail is sent. Just an error in Drupal's recent log messages saying it failed, and not why.
If I use the sendmail command, or even send an email with drush, it works. The Drupal site itself will not send the mail.