Overview
By default, Exim sends mail from the server's primary IPv4 address. To decrease the chance that spam filters mark your mail as spam, verify that the reverse DNS (rDNS) entry of Exim's outgoing IP address matches the DNS response of your server's hostname.
Note:
The steps in this ...
Exim Filtering to block emails from and to domain TLD (.ru) in the server
-------------------------------------------------------------------------
] ~ >>cp -pr /etc/cpanel_exim_system_filter /usr/local/cpanel/etc/exim/sysfilter/options/
] ~ >>vi /usr/local/cpanel/etc/exim/sysfilt...