>then that ip address is listed in that RBL database. If you see "status: >NXDOMAIN", then the ip address is NOT listed in that RBL database. However, >if you see "status: SERVFAIL", then that RBL is currently down
A more likely response will be a DNS timeout, which takes 84 seconds, or used to in postfix, so a dead RBL server can really slow down your incoming traffic, since each msg will take many 10 of seconds to accept due to the delay in the RBL timeout. Len
