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Exchange transport rule examples

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Exchange transport rule examples

Real-world transport rule patterns — external-sender warnings, encryption triggers, blocking, and compliance scenarios.

Solving Microsoft 365 · www.solvingmicrosoft365.com/guides/transport-rule-examples

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01

External-sender warning

Probably the most common transport rule — prepend a warning to incoming external emails:

Solving Microsoft 365 · www.solvingmicrosoft365.com/guides/transport-rule-examples

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02

Auto-encrypt for sensitive content

Detect sensitive content and apply Office 365 Message Encryption (OME) automatically:

Solving Microsoft 365 · www.solvingmicrosoft365.com/guides/transport-rule-examples

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03

Block specific senders

Block messages from a specific external domain or sender:

Solving Microsoft 365 · www.solvingmicrosoft365.com/guides/transport-rule-examples

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04

Append legal disclaimer

The classic legal-compliance use case:

Solving Microsoft 365 · www.solvingmicrosoft365.com/guides/transport-rule-examples

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05

Journal selected senders for compliance

For specific user populations subject to regulatory recording (traders, brokers, advisors):

Solving Microsoft 365 · www.solvingmicrosoft365.com/guides/transport-rule-examples

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06

Restrict large attachments

Reduces email storage growth and forces better collaboration patterns.

Solving Microsoft 365 · www.solvingmicrosoft365.com/guides/transport-rule-examples

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07

Honeyspot for compromised accounts

A more advanced pattern — detect impossible internal patterns:

Solving Microsoft 365 · www.solvingmicrosoft365.com/guides/transport-rule-examples

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