[EMAIL PROTECTED] said: > > > > On Tue, 17 May 2005, Eric J. Wisti wrote: > >> >> What about the users (like me) that have one ip address to play with? Do >> I >> use the ONE ptr record for mail, web, dns, ftp or whatever else I choose >> to make available to the world. Generally, only mail has a loose >> 'requirement' for front to back dns a/ptr records, but back in the day, >> so did ftp servers for the client side. So, if I choose to advertise my >> PTR as fw.domain.name, you consider my mail server suspect, unless it >> was >> advertised as fw.domain.name? Just because I don't have an easy way to >> provide 10's of addresses to the world? > > I guess I'm saying that if I telnet to fw.domain.name on 25, I should see > something like > > 220 fw.domain.name ESMTP mail relay. > > If it doesn't say that, then it is lying to anyone who connects to it. > Forward and back dns should resolve to the name spit out by the smtp 220 > string. This should be verifiable.
If I have a server with 500 virt hosts you could get a helo from any one of them. If you telnet back to it on port 25 what do you think you might see? One of about 499 "liars", maybe? dp _______________________________________________ http://lurker.clamav.net/list/clamav-users.html
