Nagios plugin check_mailq fails to run on RHEL 7.8, an AVC is seen

Issue

• Since upgrading the system to RHEL 7.8, the Nagios plugin check_mailq cannot execute anymore

  NRPE: Unable to read output
  

• The following AVC is seen in /var/log/audit/audit.log

  type=AVC msg=audit(XXX): avc:  denied  { execute } for  pid=XXX comm="check_mailq" path="/usr/bin/perl" dev="dm-0" ino=XXX scontext=system_u:system_r:nagios_mail_plugin_t:s0 tcontext=system_u:object_r:bin_t:s0 tclass=file permissive=0