http://hangout.de/fakeidentd/
A few years ago I found that some flavors of Unix (specifically some HP-UX versions) wouldn't exchange mail with a server that did not respond to an ident request. I came across fakeidentd in my search for a solution. Works like a charm.
Chris Santerre wrote:
Currently I block port 113 (ident) on the firewall. ... does everyone generally let these thru?
