Here's a puzzle I came across and was asking <crackmonkey> about while at <elise>'s excellent party. I have two boxes linked with 10/100 ethernet and a switch. They are never visible to the outside world so I use a hosts file for name resolution rather than bind. I can ping, ssh, scp, nfs and http each of the boxes from the other. The problem is that I cannot send mail. I am using Debian Potato on each with default configuration (so running exim ). I am not that familiar with exim configuration and a glance at the files hints that it does some reverse lookups and other trickery so hosts may not be sufficient. Is there any way of setting up exim in such a circumstance. I don't mind setting up bind if I have to but I'd probably have to do it on both boxes as I don't always have both of them on at once and so I would not be able to rely on the presence of a nameserver (of course, if only one box was powered up it would be difficult to send mail anyway, but I am still curious).
I walked to work through Golden Gate Park with a gorgeous sunset over the ocean at my back. It looks as if they will soon be draining the water from the Chain of Lakes to clean them up. I'd like to come back and see that when it is complete.
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