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block 'bulk' outbound mail

%3CLINGO-SUB%20id%3D%22lingo-sub-729406%22%20slang%3D%22en-US%22%3Eblock%20'bulk'%20outbound%20mail%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-729406%22%20slang%3D%22en-US%22%3E%3CP%3Ehi%26nbsp%3B%3C%2FP%3E%3CP%3EIs%20there%20a%20way%20in%20EXO%20%2F%20O365%20to%20prevent%20(compromised)%20accounts%20sending%20out%2010000%20emails%3F%26nbsp%3B%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-LABS%20id%3D%22lingo-labs-729406%22%20slang%3D%22en-US%22%3E%3CLINGO-LABEL%3EAdmin%3C%2FLINGO-LABEL%3E%3CLINGO-LABEL%3EExchange%20Online%3C%2FLINGO-LABEL%3E%3C%2FLINGO-LABS%3E%3CLINGO-SUB%20id%3D%22lingo-sub-729451%22%20slang%3D%22en-US%22%3ERe%3A%20block%20'bulk'%20outbound%20mail%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-729451%22%20slang%3D%22en-US%22%3EHi%20Taen%3CBR%20%2F%3E%3CBR%20%2F%3EThe%20mailbox%20will%20be%20disabled%20automatically%20by%20Exchange%20Online%20if%20it%20were%20to%20send%20out%20a%20lot%20of%20mail%20in%20a%20short%20amount%20of%20time%20as%20this%20is%20indicative%20of%20spam%20and%20malicious%20behaviour.%3CBR%20%2F%3E%3CBR%20%2F%3ESee%20article%3CBR%20%2F%3E%3CBR%20%2F%3E%3CA%20href%3D%22https%3A%2F%2Fdocs.microsoft.com%2Fen-us%2Foffice365%2Fsecuritycompliance%2Foutbound-spam-controls%22%20target%3D%22_blank%22%20rel%3D%22noopener%20noreferrer%20noopener%20noreferrer%22%3Ehttps%3A%2F%2Fdocs.microsoft.com%2Fen-us%2Foffice365%2Fsecuritycompliance%2Foutbound-spam-controls%3C%2FA%3E%3CBR%20%2F%3E%3CBR%20%2F%3EHope%20that%20answers%20your%20question%3CBR%20%2F%3E%3CBR%20%2F%3EBest%2C%20Chris%3C%2FLINGO-BODY%3E
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Taen keren
Super Contributor

hi 

Is there a way in EXO / O365 to prevent (compromised) accounts sending out 10000 emails? 

1 Reply
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Hi Taen

The mailbox will be disabled automatically by Exchange Online if it were to send out a lot of mail in a short amount of time as this is indicative of spam and malicious behaviour.

See article

https://docs.microsoft.com/en-us/office365/securitycompliance/outbound-spam-controls

Hope that answers your question

Best, Chris