Odd Network Problem with FC5+

[Bruno Wolff III]

On Thu, Nov 15, 2007 at 08:20:51 -0600,
  "Mikkel L. Ellertson" <mikkel at infinity-ltd.com> wrote:
> Dumb question - does it work properly when sending to other mail
> servers? If so, I suspect that mail.jococourthouse.com is doing an
> idend request on incoming mail connections, and this request is
> being dropped instead of rejected by a firewall between the two
> systems. This option is seldom used any more because it doesn't
> really provide useful information. (It did when only mainframes were
> connected to the Internet.) I don't think Fedora even installs an
> ident daemon by default any more.

And note that if ident requests are the problem, you should just need to fix
the firewall to send tcp rst packets in response to connection attempts
to port 113. You don't need to actually run an ident server.