Exchange Server Mail Configuration - Linux Cpanel

One of our client have configured their MX record on our site to correspond to their static IP of their ISP connection. For some reason some emails are bouncing back.

They believe it is a DNS issue at our end as it only occurs with certain businesses that must have certain configurations that are sensitive to DNS/MX records.

They are using exchange server for their internal network.

We checked and all the dns, ip etc are working fine, no problems there.

What is the standard procedure to configure mail through exchange?

Any suggestions, ideas?


Account hosted on Linux using cpanel.

 

 

 

 

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