Disable system users for mydomain

I’ve setup a postfix server: # postconf -n canonical_maps = hash:/etc/postfix/canonical config_directory = /etc/postfix inet_interfaces = all mydestination = localhost localhost.$mydomain $mydomain mydomain = apptizer.net myhostname = mail.apptizer.net mynetworks = 127.0.0.0/8 10.3.0.0/16 $myhostname myorigin = $mydomain relay_domains = smtp_tls_security_level = may smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated reject_invalid_hostname, reject_non_fqdn_sender, reject_non_fqdn_recipient, reject_unknown_sender_domain, reject_unknown_recipient_domain, reject_unauth_destination, reject_unauth_pipelining, check_recipient_access hash:/etc/postfix/access_recipient hash:/etc/postfix/access_sysusers,…

IP rules persisting in routing table even after configuration is deleted

Previously I had an rule-eth4 config file in /etc/sysconfig/network-scripts/ that added two rules. (I’m running on CentOS 7) I’ve since deleted this and the associated route-eth4 file from that directory. I’ve also manually deleted the rules and routes from the routing table and removed my entry from /etc/iproute2/rt_tables. However whenever i do an “ifup eth4”…