<div>
check in IIS, which certificate is binded to you Default website?
</div>


check in IIS, which certificate is binded to you Default website?

<div>
It's bad practice to give a certificate the name of a default self-signed Exchange certificate (i.e. &quot;Microsoft Exchange&quot;). &nbsp;Typically, you can remove the certificates that show &quot;Invalid&quot; because they are expired and no longer usable.<br />
<br />
From the Exchange Management Shell, you can check which are valid and which are not and remove them there too.
</div>


It's bad practice to give a certificate the name of a default self-signed Exchange certificate (i.e. "Microsoft Exchange").  Typically, you can remove the certificates that show "Invalid" because they are expired and no longer usable.

From the Exchange Management Shell, you can check which are valid and which are not and remove them there too.

<div>
Why not just open the Exchange Admin center and go to servers | Certificates. It will show you all certificates bound on each server and what services they are bound to. you can easily see if they are valid there.
</div>


Why not just open the Exchange Admin center and go to servers | Certificates. It will show you all certificates bound on each server and what services they are bound to. you can easily see if they are valid there.

<div>
<div class="content wysiwyg-content">
How do I know which certificates are being used on my exchange server ?<br />
<br />
The IT company that did install the certificates is not reachable anymore and I know that they had to use some certificates, then they dropped it and re-installed a new one...since I am managing 5 domains under my exchange box.<br />
How do I know from this screenshot which is still used and which is not so that I know which one to renew and when ?<br />
<a href="https://filedb.experts-exchange.com/incoming/2018/03_w12/1287828/cert.png" target="_blank" class="file-inline" title="screenshot of certificates (35 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>cert.png</a>
</div>
</div>


cert.png

How do I know which certificates are being used on my exchange server ?

The IT company that did install the certificates is not reachable anymore and I know that they had to use some certificates, then they dropped it and re-installed a new one...since I am managing 5 domains under my exchange box.
How do I know from this screenshot which is still used and which is not so that I know which one to renew and when ?

How to determine the right certificates on exchange server 2013 ?

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.

Exchange

HTTPS is a protocol for secure communication over a computer network which is widely used on the Internet. HTTPS consists of communication over Hypertext Transfer Protocol (HTTP) within a connection encrypted by Transport Layer Security (TLS) or its predecessor, Secure Sockets Layer (SSL). The main motivation for HTTPS is authentication of the visited website and to protect the privacy and integrity of the exchanged data. HTTPS is widely used for protecting page authenticity on all types of websites, securing accounts and keeping user communications, identity and web browsing private.