Sender's DKIM signature is broken in an Exchange Server 2013 environment

Applies To

Exchange Server 2013 Enterprise Edition Exchange Server 2013 Standard Edition

Cause

This issue occurs because Microsoft Exchange changes the headers of a message, and this breaks the DomainKeys Identified Mail (DKIM) signature.

To resolve this issue, install the following cumulative update:

2961810 Cumulative Update 6 for Exchange Server 2013

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

For more information about the DKIM signature that is defined in RFC 6376, go to the following website:

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.