Friday 25 August 2023

STRATO: Unable to email / SPF Record

The following DNS SPF record should be configured for domains sending email via the STRATO email platform:


This resolves an issue whereby STRATO customers are unable to email users.

Emails sent to are rejected with the following message:

550 5.0.0 host said 5.7.26 This mail is unauthenticated, which poses a security risk to the sender and Gmail users, and has been blocked. The sender must authenticate with at least one of SPF or DKIM. For this message DKIM checks did not pass and SPF check for [Domain] did not pass with IP [IP Address].

Tuesday 15 August 2023

Lenovo ThinkPad E14/E15 Gen 2: Rapid battery drain and unable to power on

Lenovo ThinkPad E14/E15 Gen 2 experiences rapid battery drain and is then unable to power on.

Note that this model does not have an emergency pin hole reset button.

To resolve:

  1. Disconnect power adapter or USB dock.
  2. Press and hold power button for at least 60 seconds to complete a power drain.
  3. Connect power adapter to begin charging.
  4. Press the power button once normally to power on.