Category Archives: Uncategorized

Removing certain email addresses by domain or prefix from all mail objects in Exchange on-premises

Over the summer my company moved our email ingress and egress from on premises Cisco IronPort Gateways to Exchange Online Protection. While this moved us to a modern and cloud-based mail hygiene solution, we did lose some of custom mail routing schemes we implemented when we had full control of our mail flow. One such […]

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Removing 1000’s of folders in an on oprem Exchange Mailbox via EWS

Recently our helpdesk received a report of a user leveraging Outlook 2013 (x86) in a VM on a Mac to access a local mailbox (i.e. Not O365) crashing with an out of memory error. Before they reached out to my team (which are the stewards of Exchange 2016 and O365) they tired the following The […]

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Inventorying Exchange custom attribute (extensionAttribute#\CustomAttribute#) usage within your environment

My team recently fielded a request for an unused Exchange custom attribute to use for various automation tasks around AD user groups. Since multiple teams at my company have access to various types of AD objects, we decided to do a quick inventory of the usage of those various attributes. Some quick background on those […]

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Hybrid free busy not working for just one user

A quick break down of the environment where this issue occurred Office 365 in Hybrid with Exchange 2016 Local 2019 AD Domain with Azure AD Connect syncing to Office 365 every 30 minutes, with no AD write back 350+ could mailboxes with 2200+ still on prem I recently had an issue at work with my […]

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A single server can serve as a witness for multiple DAGs. However, each DAG requires its own witness directory.

This recently trip us up when bringing up new 2016 servers in our existing 2013 environment. We and used the same witness directory for both DAGS (e.g. \\MGMT500\C$\DAGFileShareWitnesses) under the assumption that the witness directories would be different.  While it does create a folder with a different GUID for each DAG. it treats the full […]

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Dealing with User Photos in Exchange 2010 and 2013

I recently update my teams internal documentation for how Photos are handled in Excahnge 2013 and figure it might be helpful to others, enjoy!   Outlook 2010 and Exchange 2010 Outlook 2010/Exchange 2010 pulls from the AD attribute thumbnailPhoto. This attribute can hold up to a 100K file but keep in mind this increases the […]

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The 2013 Scripting Games, Beginner Event #2

Question Dr. Scripto finally has the budget to buy a few new virtualization host servers, but he needs to make some room in the data center to accommodate them. He thinks it makes sense to get rid of his lowest-powered old servers first… but he needs to figure out which ones those are.All of the virtualization hosts run […]

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The 2013 Scripting Games, Beginner Event #1 follow-up

It’s been a while since I blogged and i have the skeletons of multiple blogs post waiting to be edited. But now that I’ve settled into my new job and the scripting games have died down I can finally start posting my notes and learning points from the rest of the scripting games events. So […]

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