So - that means the problems we are having will spread to hotmail?
On 09/08/15 10:03, Anne Mitchell wrote:
Straight from the proverbial horse's mouth (someone at MS), shared with
permission:
"We are migrating mailboxes from the current Hotmail/outlook.com infrastructure over to Office
365. This means that migrated users have their mail hit Hotmail's front end and then forwarded to
Office 365 where it re-undergoes an authentication check, but is not actually enforced. The
original spam/non-spam verdict at Hotmail is re-propagated through the system. If the message is
subsequently forwarded some other place, it will fail DMARC because Office 365 has an issue where
it modifies message content when forwarding ("fixes" it up). This behavior will be
changed in the Sept/Oct time frame."
---
Anne
Anne P. Mitchell,
Attorney at Law
CEO/President
ISIPP SuretyMail Email Reputation, Accreditation & Certification
Your mail system + SuretyMail accreditation = delivered to their inbox!
Are you an ESP? Ask us about our Email Academy for YOUR Users!
http://www.SuretyMail.com/
http://www.SuretyMail.eu/
Author: Section 6 of the CAN-SPAM Act of 2003 (the Federal anti-spam law)
Member, California Bar Cyberspace Law Committee
Member, Colorado Cybersecurity Consortium
Ret. Professor of Law, Lincoln Law School of San Jose
303-731-2121 | amitch...@isipp.com | @AnnePMitchell
Facebook/AnnePMitchell | LinkedIn/in/annemitchell
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