On Wed, Dec 16, 2009 at 12:12:22AM -0600, James Hess wrote: > Many sites don't use names that will necessarily be meaningful to an outsider.
Then they should expect issues with mail acceptance by outsiders. > Some sites might want to avoid certain "meaningful" RDNS entries > since spammers, hackers, and other abusive users that scan IP ranges > can utilize the RDNS to facilitate their activities. This is nonsense. RDNS/DNS naming choices are a trivial obstacle to spammers et.al. who went over this speed bump at 70 MPH years ago and have been accelerating ever since. This kind of security-by-obscurity tactic is far more likely to draw their attention than evade it, as any site using it has in effect run up a large flag with "we don't understand security basics" written on it and thus made itself an attractive target. ---Rsk
