- Recommended method: Enable DKIM by creating a CNAME record for your domain in Office 365. For more information, see http://blogs.msdn.com/b/tzink/archive/2015/10/08/manually-hooking-up-dkim-signing-in-office-365.aspx.
- Contact the recipient domain and suggest that they comply with DKIM RFC 6376. Consider the message to be unsigned if a DKIM authentication failure occurs.
Article ID: 3145666 - Last Review: 28 Dec 2016 - Revision: 1