Your IP tables can become quite large, making it difficult to check if a particular network address is recognized by the Server as a Client one, or as a Blacklisted one.
Use the Test Address panel located on the Client IP Addresses and Blacklisted IP Addresses pages:
Enter an IP address and click the Test button. The IP address status appears.
The status shows the IP address you have entered. It can have the Local prefix, if the address is the local address of your Server, or it can have the LAN prefix, if the address is included into LAN IP Addresses list.
The "reverse-resolved" name is displayed if the Server had to perform the "reverse-resolving" DNS operation to get the address status.
The address and optional name are followed by the address status:
Trusted - The IP address is a Client IP address. TempTrusted - The IP address is processed as a CLient IP address because some user (with the Relay Service Enabled) has recently authenticated from that address. Blacklisted - The IP address is blacklisted. If the address is blacklisted because it is included into some RBL, the name of that RBL server is displayed. Regular - All other addresses.