Reverse DNS/ident lookups on SMTP connections

[Sam Johnston]

Hello all,

I use qmail-smtpd on internal (ie 192.168.0.0/16) networks in conjunction
with dnscache. I've improved connection time dramatically by adding '-R -H'
to the tcpserver arguments so as reverse lookups are not attempted. I would
prefer to resolve external addresses, but not worry about internal ones (or
perhaps have the internal ones resolve to their IP address). How have others
solved this problem?

Bonus points for not having to run 2 tcpservers.

 - samj