On Wed, Dec 04, 2002 at 01:18:27PM +1100, Crossfire wrote: > Kevin Waterson was once rumoured to have said: > > How is it possible to ban all mail from addresses that > > do not reverse lookup? > > This is not always a good idea - not every legimate mail server has a > valid reverse lookup address. (Certainly, the ones in evilhouse > don't).
you could argue that it's not a "legimate mail server" if it doesn't reverse resolve. Are there valid reasons why they wouldn't reverse resolve? I'm asking cos I'm tightening up my mail server quite a lot and rejecting connections before receiving the actual mail is better than filtering after receiving it (a la spamassassin, although I'm using that as well). Dave. -- SLUG - Sydney Linux User's Group - http://slug.org.au/ More Info: http://lists.slug.org.au/listinfo/slug
