I'm having issues, most likely pertaining to this below. Incoming emails are not showing up but all internal and outgoing emails are fine.
There is no valid SMTP Transport Layer Security (TLS) certificate for the FQDN of remote.superiormedicalsupply.com. The existing certificate for that FQDN has expired. The continued use of that FQDN will cause mail flow problems. A new certificate that contains the FQDN of remote.superiormedicalsupply.com should be installed on this server as soon as possible. You can create a new certificate by using the New-ExchangeCertificate task.
I admit I'm not entirely familiar with this process so I may need some hand holding. i've tried to renew the certificates that are expired and would need to complete pending request, but I'm not sure with what I need to complete this request with. Can I do this with a *.abc.com certificate? Any other advice?