Category: Exchange

Moving from SfB Hybrid to Teams-only

Time to move from On-premises Hybrid to the cloud. What it takes and what could be the problems with the process? End of Life for On-premises versions Skype for Business 2015 mainstream end date was October 13, 2020. However, the…

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Autodiscover redirect leakage

** This doesn’t concern Exchange Online in any way, only on-premise versions ** Today Guaricore lab team discovered on-premises Exchange autodiscover vulnerability. I want to call my blog post “Autodiscovering the Great Leak” but that seems like too much as…

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Using attack simulator for user education and gather insights.

This is part 2 of compliance and user governance. Here is part 1. Attack simulator is a tool for educating users and gathering insights on what they do wrong or right. Who can use it? If your organization has Microsoft…

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Exchange and hybrid identity

Hi again, Now to my all-time favorite topic, Exchange covered with identity and security. How many times have see the error above when running HCW as an Exchange admin, I bet many and we will get to this later on….

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Identity is the new perimeter and why information protection matters.

Your identity, identification or credit card is important, don’t loose them and don’t take it lightly. Even if talking about social security number or just your email. Both can be hijacked and used for purposes you don’t want. How you…

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Exchange Modern public folders and how-to cope with them.

With Exchange Hybrid public folders there is two options, either Legacy or Modern. You always have to migrate them to the cloud either thru Exchange Hybrid (13,16 and 19) and Exchange Hybrid (10) or with Third-party tools. If You have…

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Azure Dynamic Groups and how to use Extended attribute.

I wondered how to automagically add users to an Azure AD group with after their mailboxes have been migrated to the Cloud thru an Exchange Hybrid (Classic or Modern) And I figured out this one. Users get always populated with…

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Cutover-migration from SFB Onpremises to Teams with Enterprise Voice.

Hi all, I known that this one has been on all of the bloggers concerning Enterprise Voice and hybrids, but. There is some findings that I discovered during my migrations and I want to point them out. First, when You…

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Search-Mailbox and overcoming 10.000 item limit.

So You have a mailbox that is filled with spam, phishing or whatever emails that You dont want. I have to say that Microsoft’s new command (new-compliancesearchaction) seems nice, but doesnt work. new-compliancesearch and then start-compliancesearch find messages, but thats…

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O365 hybrid mailbox move, “A corrupted item was encountered: Unable to translate principals for folder”

When moving mailboxes to exchange online, you will probably get errors like this “A corrupted item was encountered: Unable to translate principals for folder” Some of these errors occur for a reason that all the users which have permissions to other user mailbox folders…

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