Adjust Microsoft Office 365 Quarantine Policies to Deliver Emails to Mailbox Junk Mail Folder

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QUARANTINE

https://security.microsoft.com/quarantine

INVESTIGATE

Check the Message Policy Type Column to Find what Policy to Adjust.

Release Genuine Messages and Report False Positive to Microsoft

Inside Message Details "Policy name." you may see the policy triggering the quarantine action

ADJUST POLICIES

https://security.microsoft.com/threatpolicy

CAREFULLY EVALUATE THE RISK OF CHANGING SECURITY POLICIES !!!

STANDARD OR STRICT SECURITY POLICIES MAY NEED TO BE DISABLED OR ADJUSTED !!!

EDIT ANTI-PHISHING POLICY

Edit all the (Default) Policies

On Action: Change Quarantine to Deliver to Mailbox Junk Email Folder

EDIT ANTI-SPAM POLICY

Edit all the (Default) Policies

On Action: Change Quarantine to Deliver to Mailbox Junk Email Folder

Add Whitelist Domains and Senders (If Any)

Change Automatic Forwarding Rules to Off (Outbound)

EDIT QUARANTINE POLICY

Edit Global Settings - Send end-user spam notifications every: 1 Day

REVIEW

Recheck Quarantine after a few hours to determine further adjustments.

ANALYZER

https://security.microsoft.com/configurationAnalyzer

Check the configuration analyzer to determine the difference between recommended and current settings

REFERENCES