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Microsoft Email filtering policies

Copper Contributor

How can I prevent emails from specific domains going to junk folder.

1 Reply



Specific mailboxes can have mailbox junk settings. That can be done with the Outlook client, or remotely with the Exchange PowerShell commandlet set-MailboxJunkEmailConfiguration "display name" -TrustedSendersAndDomains @{Add="domain.tld"}.


For the whole tenancy or a defined group of recipients, you can have a mail flow rule that sets SCL to -1 though it is advisable to have a second predicate in the rule to prevent the exempted domain from being spoofed. I typically go for defined sender IP ranges, but there are other properties you might use as a double check.


Don't bother with the official advice to put a submission into Microsoft if the sender is persistently drawing a high SCL or you can see other reasons why some would consider the mail spam.