syslog-ng on RHEL, at least on the tested versions 8.9 and 9.3, uses the source configuration name of s_sys in /etc/syslog-ng/syslog-ng.conf, rather than what the AMA ...

We have a couple of apps (among them Networker) that add various things to /etc/syslog.conf, and consequently are displeased by its removal in RHEL 6 and its CentOS stablemate. Is there any problem ...

Use the documentation. Man syslogd(8). Specifically you want the '-r' option. You'll probably need to modify your init scripts to get it to take, or they may be a configfile in /etc/defaults or ...