Learn how to use Exchange Online PowerShell to determine which mail flow rules are impacting email attachments being received.

Learn how to validate connectors in Exchange online to help troubleshoot mail flow issues in and out of your organisation.

Learn how to troubleshoot if transport rules are affecting your mail flow in Exchange online. This post makes up part of my MS-220 study guide.

Learn how to interpret message trace results and policies in Exchange Online using PowerShell and the management portal.

Learn how to interpret messages headers in Exchange Online by reviewing the message properties from the client or exchange admin center.