Flagging external emails and exceptions

[Beth Albertson <albertb3 () WWU EDU>]

Colleagues,

We are thinking of flagging emails coming in external from our O365 tenant with either a red header at the top of each 
email or adding something like <EXTERNAL> to the subject line.  I wanted to ask other schools that are doing this 
whether they are adding exceptions for external organizations that are trusted.  For example, we use Jira, and I 
thought we could add this to an exception list.  Some have argued that maintaining such a list could be cumbersome and 
could potentially confuse users because some external emails would be flagged and others would not.  Does anyone have 
experience or thoughts on this matter?

Sincerely,

Beth Albertson, CISSP(r), PMP(r)
Director of Information Security
Western Washington University
beth.albertson () wwu edu<mailto:beth.albertson () wwu edu>

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