MicrosoftI've never paid much attention to the rules used in filtering phishing, scams and so forth.
However, recently, I realized that my colleague's emails were all going to my Junk Folder in Outlook.
I warning I get with her emails is (after I anonymize her email details):
mailto:First.Last@domain.com appears similar to someone who previously sent you email, but may not be that person. https://urldefense.com/v3/__http://aka.ms/LearnAboutSenderIdentification__;!!CqdutyHt!7D7ETM3CJ2iq1-Pm0_qm1VE58a3X_CXjIUcny4dxvpn3z9CdyG-OH84CvFtt7n397Q$
I sent her this warning message to dig further, and found out that her domain (company) asked
her to change her login email address to conform with a company-wide policy. So, her email used
to be:
mailto:FirstMiddle.Last@domain.com
which was changed by company policy to:
mailto:First.Last@domain.com
This change has seemingly resulted in the junk mail filtering.
This is not ideal. I understand that there are ways to bypass this filtering through whitelisting.
But I am more curious about the method and the effects of this method on legitimate email addresses.
