Exchange 2016 POP3 configuration

I have a Client that uses Reynolds & Reynolds to send and receive emails to/from customers with the program. They are able to send but not receive. Spoke with R&R support and they use POP3/port 995 to receive emails to the program. I'm trying to configure POP3 and think I have everything set but I'd rather be 120% sure rather than leave a security risk open.

In Management Shell I ran the >Set-PopSettings to configure everything and when i run Get-PopSettings I get

InternalConnectionSettings : {Exchange.Domain.local:995:SSL, Exchange.Domain.local:110:TLS}
ExternalConnectionSettings: {email.domain.com:110:TLS, email.domain.com:995:SSL}
UnencryptedOrTLSBindings: {x.x.x.x:110} (x.x.x.x = external exchange IP)
SSLBindings:                             {x.x.x.x:995} (x.x.x.x = external exchange IP)
Cert Name                                 email.domain.com

Does this look correct? Should the Binding be the External IP or Internal? Testing using Microsoft Analyzer (https://go.microsoft.com/fwlink/p/?LinkID=313839) fails with

Test TCP port 995 on host email.domain.com to ensure its listening and open. The specified port is either blocked, not listening, or not producing the expected response.

Any help is appreciated and if you need more info let me know.

Thank you!