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Last year we migrated to 365 and has been running fine. I would like to decommission our in-house 2010 exchange server but before I do that, do I need to know any issues that may arise from this? Is there really a need to keep the exchange server? I've read pros and cons about it. For me, it's just another server that I have to manage.
When I did the conversion, I used the Hybrid conversion.
You need to keep it around if you are using AADConnect and/or ADFS and want to be supported :)
That's really it. If you do not use sync from on-prem to Azure, then its not needed at all.
If you decide to remove it and you are using AADConnect, then you would need to make any on-prem changes that sync to Azure using ADUC or ADSIEDIT or the scripting/tool of your choice. You won't be technically supported, but that may not matter for you.
Note that Microsoft is still working on fixing this requirement.
I'm sure you have already seen:
https://video2.skills-academy.com/en-us/exchange/decommission-on-premises-exchange
Otherwise, thats it for the most part.
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anonymous user
Agree with AndyDavid. If you no longer need to manage from on-premises organization, you can just remove the hybrid configuration and uninstall your Exchange 2010.
Additionally, if you decide to keep Exchange server in the end, it's also suggested to upgrade your Exchange 2010 to 2016 to remain secure and supported. For your reference: Exchange 2010 end of support roadmap.
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anonymous user
Just checking in to see if above information was helpful.
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anonymous user
Any updates so far?
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