<div>
Hi <br />
<br />
All the information you need is on MS Docs site<br />
<br />
<a href="https://docs.microsoft.com/en-us/exchange/clients/pop3-and-imap4/pop3-and-imap4?view=exchserver-2019" rel="ugc">https://docs.microsoft.com/en-us/exchange/clients/pop3-and-imap4/pop3-and-imap4?view=exchserver-2019</a>
</div>


Hi

All the information you need is on MS Docs site

https://docs.microsoft.com/en-us/exchange/clients/pop3-and-imap4/pop3-and-imap4?view=exchserver-2019 [https://docs.microsoft.com/en-us/exchange/clients/pop3-and-imap4/pop3-and-imap4?view=exchserver-2019]

<div>
Hello Experts<br />
<br />
I did follow this article: &nbsp; <br />
<a href="https://docs.microsoft.com/en-us/Exchange/clients/pop3-and-imap4/configure-authenticated-smtp?view=exchserver-2019" rel="ugc">https://docs.microsoft.com/en-us/Exchange/clients/pop3-and-imap4/configure-authenticated-smtp?view=exchserver-2019</a><br />
<br />
But i dont have a certificate and this is a new installation &nbsp;i need to know if i can change the server to listen to port 25 without breaking the mailflow
</div>


Hello Experts

I did follow this article:  
https://docs.microsoft.com/en-us/Exchange/clients/pop3-and-imap4/configure-authenticated-smtp?view=exchserver-2019 [https://docs.microsoft.com/en-us/Exchange/clients/pop3-and-imap4/configure-authenticated-smtp?view=exchserver-2019]

But i dont have a certificate and this is a new installation  i need to know if i can change the server to listen to port 25 without breaking the mailflow

<div>
You need to purchase SSL certificate to use POP/IMAP.<br />
<br />
SMTP with TLS: using port 587<br />
SMTP without TLS/SSL: port 25
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You need to purchase SSL certificate to use POP/IMAP.

SMTP with TLS: using port 587
SMTP without TLS/SSL: port 25

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<div class="content wysiwyg-content">
Hello Experts<br />
<br />
I am configuring my Exchange Server . I want to configure SMTP settings for POP and IMAP clients <br />
<br />
My Mail flow is OK i have an Edge Server . But i think my SMTP parameters are not publish<br />
<br />
What should i do to have these sntp parameters publish?<br />
<br />
I did check on one of my clients i dont have the parameters<br />
<a href="https://filedb.experts-exchange.com/incoming/2020/01_w05/1442211/Exchange.PNG" target="_blank" class="file-inline" title="Exchange.PNG (12 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>Exchange.PNG</a>
</div>
</div>


Exchange.PNG

Hello Experts

I am configuring my Exchange Server . I want to configure SMTP settings for POP and IMAP clients 

My Mail flow is OK i have an Edge Server . But i think my SMTP parameters are not publish

What should i do to have these sntp parameters publish?

I did check on one of my clients i dont have the parameters

Configure SMTP settings for Exchange Server 2016

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

Interactions between email servers and clients are governed by email protocols. The three most common email protocols are POP, IMAP and MAPI. Most email software operates under one of these (and many products support more than one).  The correct protocol must be selected, and correctly configured, if you want your email account to work.