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Encrypt only rolling out starting today in Office 365 Message Encryption

Caroline Shin's avatar
Caroline Shin
Icon for Microsoft rankMicrosoft
Feb 22, 2018
Last September, we announced new capabilities in Office 365 Message Encryption that enable users to seamlessly collaborate on protected emails with anyone. This release included Do Not Forward an out...
Updated May 11, 2021
Version 11.0
compliance
microsoft 365
security
Gary Howard's avatar
Gary Howard
Copper Contributor
Apr 12, 2018

I have created multiple transport rules where various conditions trigger actions to encrypt messages using the Encrypt Only RMS template.  I tested from the customer's O365 tenant by sending messages to gmail.com, outlook.com and comcast.net and my own company's email address.

 

When I send to Comcast.net I am able to "Read the message" by authenticating using Sign in with a one-time passcode".

When sending to Outlook.com I am able to "Read the message" after authenticating using either "Sign into Microsoft" or "Sign in with one-time passcode".

When sending to Gmail.com I am able to "Read the message" after authenticating using either "Sign into Google" or "Sign in with one-time passcode".

 

When I send to my company email address I CANNOT "Read the message" even after be redirected to O365 and using my work account. I tried reading the message directly from Outlook on the Web but no luck.  I assumed this would work.  What am I missing?