Delivery Status Notification (Failure)
Delivery to the following recipient failed permanently: natalirum@gmail.com
Technical details of permanent failure:
550-5.7.26 Your email has been blocked because the sender is unauthenticated. Gmail requires all senders to authenticate with either SPF or DKIM. Authentication results: DKIM = did not pass SPF [vejbyif.dk] with ip: [46.183.139.173] = did not pass For instructions on setting up authentication, go to support.google.com/mail/answer/81126#authentication 2adb3069b0e04-55a35d661d3si2067841e87.226 – gsmtp
Technical details of permanent failure:
550-5.7.26 Your email has been blocked because the sender is unauthenticated. Gmail requires all senders to authenticate with either SPF or DKIM. Authentication results: DKIM = did not pass SPF [vejbyif.dk] with ip: [46.183.139.173] = did not pass For instructions on setting up authentication, go to support.google.com/mail/answer/81126#authentication 2adb3069b0e04-55a35d661d3si2067841e87.226 – gsmtp
687e2d266e2ca.rfc822-headers