Subject: Undeliverable: Den mest lönsamma energisparåtgärden är ...

From: <[email-masked]>
Date: Tue, 14 Oct 2025 22:37:16 +0000

mx.google.com rejected your message to the following email addresses:

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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 [hotmail.com] with ip: [2a01:111:f403:c202::7] = did not pass For instructions on setting up authentication, go to https://support.google.com/mail/answer/81126#authentication 41be03b00d2f7-b678fff5a8dsi8377643a12.119 - gsmtp

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[email-masked]
mx.google.com
Remote server returned '550-5.7.26 Your email has been blocked because the sender is unauthenticated. 550-5.7.26 Gmail requires all senders to authenticate with either SPF or DKIM. 550-5.7.26 Authentication results: 550-5.7.26 DKIM = did not pass 550-5.7.26 SPF [hotmail.com] with ip: [2a01:111:f403:c202::7] = did not pass 550-5.7.26 For instructions on setting up authentication, go to 550 5.7.26 https://support.google.com/mail/answer/81126#authentication 41be03b00d2f7-b678fff5a8dsi8377643a12.119 - gsmtp'

Original message headers:

Resent-From: <[email-masked]>
From: Svensk Energiutbildning <[email-masked]>
To: [email-masked]
Reply-To: [email-masked]
Subject: Den mest lönsamma energisparåtgärden är ...
Date: Tue, 14 Oct 2025 10:30:39 +0200

Subject: Den mest lönsamma energisparåtgärden är ...
From: Svensk Energiutbildning <[email-masked]>
To: [email-masked]
Date: Tue, 14 Oct 2025 10:30:39 +0200

Installationsteknisk energieffektiviseringKurs om hur man driftoptimerar och energieffektiviserar byggnader 
med installationstekniska åtgärder.