Delivery Status Notification (Failure)
Delivery to the following recipient failed permanently: kirill9012@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: [46.183.139.179] = did not pass For instructions on setting up authentication, go to support.google.com/mail/answer/81126#authentication 38308e7fff4ca-330a9246445si27128211fa.345 – 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: [46.183.139.179] = did not pass For instructions on setting up authentication, go to support.google.com/mail/answer/81126#authentication 38308e7fff4ca-330a9246445si27128211fa.345 – gsmtp
687f86b774aeb.rfc822-headers