Not sending mail to unregistered user claus.stuemke@aiticon.de because your SCM claimed this was associated with a user ID ‘claus.stuemke' which your security realm does not recognize; you may need changes in your SCM plugin Sending email to: matthias.mueller@appng.org Connection error sending email, retrying once more in 10 seconds... Connection error sending email, retrying once more in 10 seconds... Failed after second try sending email