<snip from FAQ>
How do I disable DNS lookups at run-time?
Normally, qpopper attempts a reverse-lookup on the client IP address
when a connection is made. You can prevent this by adding the -R option
to the inetd.conf line which invokes qpopper. For example:
pop3 tcp /usr/local/lib/qpopper qpopper -sR
When this is done, the log file repeats the client IP address twice,
instead of the canonical name following the IP address.
You might want to do this on systems that have a high load, to avoid the
overhead of the DNS lookups. You might also want to do this if the
information is simply not useful or desired.
<snip>
I was wondering if it is possible to turn off the lookup for just
certain IP addresses? or is it all or nothing?
Thanks
John
