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Dealing with junk/spam email

How Exchange Online spam filtering differs from Hermes, and what you can do to reduce the amount of junk email you receive.

Why am I getting emails about quarantined messages?

Exchange Online Protection (EOP) is a spam and malware filter available as part of the Exchange Online service. It is currently set to assess whether email is spam via both EOP's own Spam Confidence Level ruleset and the SpamAssassin scores assigned by PPSW. Any item of mail that is ranked at a value of five or higher from either of these checks is sent to a central quarantine area, where it is retained for up to 15 days. This setting is equivalent to the settings used by Hermes. If any messages addressed to you are held in quarantine, you will get a digest of the items quarantined, sent from quarantine@messaging.microsoft.com.

See: Quarantined messages

 

Why am I getting a lot more junk email since I migrated from Hermes?

While all of our email systems have in-built spam filters, we do see peaks and troughs in the amount of spam that makes it through. While the migration will not remove any of these spam filters (indeed, Exchange Online contains an additional one – Exchange Online Protection (EOP)) you may find that you need to re-teach your email client to recognise spam after you’ve migrated. The fine-grained spam filtering (the spam 'score' limit) on Hermes is also no longer available.

 

Junk email settings in Outlook

See: Block or allow (junk email settings) in Outlook

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