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Kim Van Rymenant

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About 2 exchange certificates

Hey Experts,
I have inherited a small business customer who's only server is a SBS2011 (25clients).
The SBS on premise exchange server is heavily used, and as it has been some time I've still had to maintain an exchange 2010 I've lost a bit of knowledge about these inhouse mailservers.
I've noticed 2 warning events popping up from eventvwr with eventid 26: exchange web services, informing me that 2 exchange certificates will be expiring soon.
When I check the services they are used for, it says they are used for nothing. (check attachment)
I'm someone who likes this to be as clean as possible, so can I just delete these?
Or will I need to renew? And if so, whatfor?
Please advise!
Kind regards,
Kim
expertsexchange.jpg
ExchangeSBS* eventid

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Wayne88
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Mark Bill
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my two cents

dont use self signed certs use Godaddy or competitor level wildcard certs and SSL your exchange EWS urls autodiscover etc from the one wildcard cert.

self signeds are for cowboys in my opinion. #1
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Kim Van Rymenant

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Dear Wayne88,
There are no known services attached to the certificates, as shown in the screenshot.
User generated imageThe Get-ExchangeCertificate
User generated imageI guess I can safely delete, as apparently there's only one used?
Please confirm?
Kind regards,
Kim
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I just checked and, no they don't end with that thumbprint.
Can I assume that it was my predecessor messing around trying to create a self-signed cert, having issues with the owa IIS not willing to cooperate (certification errors popping up), and that the decision was made to get an external authority to provide a valid certificate?
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Dear Wayne88,
thanks for the helpful replies.
I'll delete the certificates this week, and keep you informed!
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Wayne88
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Hi Kim, sure and keep us updated.  Thanks for getting back.
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Dear Wayne88,
exchange certificates deleted, no issues came up.
Thanks for the confirmation!
Kudos to you!
Greetings!
Kim
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Wayne88
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You're welcome Kim and thanks for getting back! Cheers!
Exchange
Exchange

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

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