Find AD Objects with an Incorrect TargetAddress

When you have a hybrid environment setup with Exchange Online, you’ll notice a new Accepted Domain in the Exchange Online portal. <domain>.mail.onmicrosoft.com This domain is used by Exchange on-premises to route mail to a mailbox that has been migrated from Exchange on-premises to Exchange Online. After a mailbox is migrated from Exchange on-premises to Exchange…

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Bulk editing of Safe Sender lists

The following article was written by Richard Deprez who is a Support Escalation Engineer for Exchange Online at Microsoft. Recently I have seen an increase in phishing attacks coming through EOP due to safe sender aggregation (email addresses that have been added by end users to their safe senders list will be respected by EOP,…

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Learn Exchange Online PowerShell with Command Logging

When you are navigating or making changes in the Exchange Online portal, PowerShell is being executed in the background. Using the Command Logger, you can see exactly what that these background PowerShell command looks like! This tool is a great way to learn PowerShell and can give you a head start in your own scripting….

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Support Hot Topics – Reducing the threat of zero-day malware

Welcome to the second episode in our Support Hot Topics for Exchange Online Protection series. I’m joined in this episode by my co-worker, Jason, and we discuss Exchange Online Protection strategies that can help reduce the threat of zero-day malware. I have seen an increase in zero-day malware attacks that use social engineering to get…

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Scheduling Mail Reports in Office 365

Obtaining reports in the past was a manual task which had to be performed every time you wanted to pull data. Many of you (most of you?) have asked us to allow for automated reporting in Office 365. Did you catch how I used the words, “in the past,” in the first sentence? Well, I’m…

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Need details on who and what are triggering your rules? There's a cmdlet for that!

Need to get a list of all messages that triggered a particular transport rule, or do you want to see all rules that have been triggered by a particular sender? This information can be easily found using the Get-MailDetailTransportRuleReport cmdlet. Looking past the name being much too long, this cmdlet can provide very insightful information…

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Use PowerShell to search for transport rules (updated)

Update (April 7, 2015): More content and examples have been added to this article since the original posting. PowerShell can be used to quickly search for rules matching specific criteria. This can be incredibly valuable for a tenant that contains a lot of rules. While possible to search for transport rules in the EOP portal,…

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Troubleshoot a broken junk mail folder

I recently worked on a very interesting case that I wanted to share. This organization had set EOP to deliver all spam messages to end users junk mail folder. This worked great for most users, but a small number experienced EOP delivering spam messages directly to their inbox, as if they weren’t being scanned at…

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Message Trace, the PowerShell Way

From my experience, a very small number of people actually choose PowerShell over the GUI (Graphical User Interface, ie. The Office 365 Portal). But once you get a grasp of PowerShell and write some scripts, you’ll see the light and going back to your old ways will be very hard. PowerShell has two big advantages….

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Importing Safe and Block Lists with PowerShell

I just dropped my van off for some maintenance at the dealership and am currently waiting for a shuttle to take me to the office. As I sit here I’m thinking about EOP and PowerShell and have come up with a great idea for this week’s article. I don’t always think about EOP outside of work,…

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