For the record:
Matt suggested to use PHP to send via SMTP to localhost. Ive found https://github.com/PHPMailer/PHPMailer and a Drupal module of the same name that makes it available in Drupal. This works pretty much out of the box. Thanks!
Hans
Gesendet:Montag, 19. Januar 2015 um 22:21
Some of my sites have private forums that let members subscribe to get email
notifications when new posts/comments are created. The mails are generated by
Drupal/PHP via either `sendmail -t -i` or `/var/qmail/bin/qmail-inject`.
Obviously, neither of those go through qpsmtpd and the dkim plugin,
