HELP - CSF blocking all inbound email

[rolinger]

This started recently and I can't figure out what is causing it.

Hotmail, outlook, gmail, yahoo, client domains, configserver.com - with CSF enabled no mail is being received, but it appears all outbound email is working fine. If I disabled CSF all the mail starts coming in again.

I made no changes to CSF that would have caused this.

TCP_IN ports: `20,21,25,53,80,110,143,443,465,587,993,995,2224,2077,2078,2079,2080,2082,2083,2086,2087,2095,2096,2525,8443`
TCP_OUT ports: `20,21,22,25,37,43,53,80,110,113,443,587,873,993,995,2086,2087,2089,2703`

UPD_IN ports: `20,21,53`
UDP_OUT ports: `20,21,53,113,123,873,6277,24441`

I have checked all the logs and can't find any matching block/deny logs for specific incoming email server connections. I have checked both CSF and Exim logs and don't see any block/deny/rejects. I am at a loss as to why this is occurring. What else can I look at? What info can I provide to help troubleshoot this?

I am desperate to get this fixed. Are there guru services via ConfigServer.com or other I can buy that will assist with this?

OS CentOS v7.9.2009 STANDARD kvm
cPanel Version 106.0.8
CSF v14.17

[Sergio]

Did you enabled DMARC on your domains?
If so, Did you set the POLICY option to reject?