I've got a host that is attempting to send me mail. It is being rejected
because "IP address lookup failed". But if I do an nslookup on the
same box, it works every time.
[Real IP address]
# nslookup 209.19.7.72
Name: ng.sandh.com
Address: 209.19.7.72
Using debug mode with the same IP is get...
# /usr/local/exim->exim -bh 209.19.7.72
**** SMTP testing session as if from host 209.19.7.72
**** Not for real!
>>> host in host_lookup? no (option unset)
>>> host in host_reject? no (option unset)
>>> looking up host name for 209.19.7.72
>>> IP address lookup failed
What is causing the failure?? Everything else appears to be working
but not this host's IP.
--
Kevin