Certain domains not receiving verification E-mails

Teun Dozeman 0 Reputation points

Some providers do not receive the E-mail verification code:

      • @magenta.de
  • @t-online.de

We are using custom policies and mails are being sent by Microsoft.

Microsoft Entra External ID
Microsoft Entra External ID
A modern identity solution for securing access to customer, citizen and partner-facing apps and services. It is the converged platform of Azure AD External Identities B2B and B2C. Replaces Azure Active Directory External Identities.
2,639 questions
Microsoft Entra ID
Microsoft Entra ID
A Microsoft Entra identity service that provides identity management and access control capabilities. Replaces Azure Active Directory.
19,454 questions
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  1. Dillon Silzer 54,466 Reputation points


    Try using Message Trace in Exchange Online Admin portal:

    Message trace in the modern Exchange admin center in Exchange Online


    Check whether they are being received to your e-mail addresses and if they are failing--why they are failing. You may have some policies set up that are blocking these types of e-mails or forcing them to a spam folder.

    If this is helpful please accept answer.

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