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Experts,<br />
<br />
First off I am not a DNS guru. <br />
<br />
I was reading about SRV records as it relates to exchange.<br />
What is the difference between a SRV record and a CNAME? It appears that a SRV record can direct a request to a mail server and port #. When you create the SRV record in Windows, is the SERVICE a drop down menu that allows you to select a predefined service or is it anything you wish to type in?<br />
A CNAME can direct a request to a taget host which I can make it the mail server. However, I can't control the port. Would this be the main difference between the two?
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Experts,

First off I am not a DNS guru. 

I was reading about SRV records as it relates to exchange.
What is the difference between a SRV record and a CNAME? It appears that a SRV record can direct a request to a mail server and port #. When you create the SRV record in Windows, is the SERVICE a drop down menu that allows you to select a predefined service or is it anything you wish to type in?
A CNAME can direct a request to a taget host which I can make it the mail server. However, I can't control the port. Would this be the main difference between the two?

SRV RECORD AND CNAME

The Domain Name System (DNS) is a hierarchical, globally distributed system responsible for associating the name of a computer, service or other resource into an IP address for connecting to the Internet or a private network. Most prominently, it translates domain names to the numerical IP addresses needed for the purpose of computer services and devices worldwide.