We have: smtpd_client_event_limit_exceptions = 192.168.0.0/16,127.0.0.1,cidr:/etc/postfix/config/white_list,hash:/etc/postfix/config/white_list_internal_servers,hash:/etc/postfix/config/anvil_whitelist
configured for Anvil. The last file is for rate-limiting exemptions only, whereas the other 2 are used for whitelisting in other places. I thought that, for networks that fall on classful boundaries, for example, /24s, I could just do [in /etc/postfix/config/anvil_whitelist] 10.0.0.5 OK 172.16.34 OK or 172.16.34. OK However, with either notation, messages with an IP falling within (e.g.,) 172.16.34.0/24 seem to be getting rate-limited. This is Postfix 2.3.3 on RHEL 5. Adding the network in question to the CIDR map, in CIDR format, seems to work as expected, but just wondering if there's a way to get the expected behavior without adding an additional file and making our config even more convoluted. w
