Re: [exim] OFF LSIT - ident check

On Tue, 2007-01-30 at 19:28 +0100, Andrzej Adam Filip wrote:
> Do you think it would be worthwhile to create some kind of in DNS hint
> recommending to check ident info provided by given host?

a single TCP SYN to port 1413 with a response of RST is much less
expensive than a DNS roundtrip to get a "no data" response.

those who set up their firewalls to drop packets silently will get
slower e-mail from some hosts, but that's their own doing.
--
Kjetil T.