Hi Danny, I think you're mixing me and Dan up. I don't send NDRs. Not from any of the relays in my spam relay chain, or from the Exchange Server. I see the wisdom in Dan's arguments and why he needs to enable NDRs. I don't have the same requirements in my deployments, so I don't send them. So, my scenario, the problem was with the IIS platform and its SMTP service and the inablity to turn off NDRs. Tom Thomas W Shinder, M.D. Site: www.isaserver.org Blog: http://spaces.msn.com/members/drisa/ Book: http://tinyurl.com/3xqb7 MVP -- ISA Firewalls > -----Original Message----- > From: Danny [mailto:nocmonkey@xxxxxxxxx] > Sent: Tuesday, January 03, 2006 9:01 PM > To: [ISAserver.org Discussion List] > Subject: [isalist] Re: How I spent my Christmas vacation - > Email found in subject > > http://www.ISAserver.org > > On 1/3/06, Thomas W Shinder <tshinder@xxxxxxxxxxx> wrote: > > Aha! > > > > You make several errors: > > That's funny... isaserver.org only accepts email sent to recipients > that exist! Who's side are you on? :) > > [...] > > Thomas, you are set on your ways, but the intelligent people on this > list will extract useful information (from your config and mine) for > their environments. > > The primary flaw with your configuration is that we all don't have the > time to personally inform legitimate and spoofed senders that "there > email was accepted and sent to the correct address" or "there email > was accepted but was sent to the wrong address, so please send it > again, but if you get it wrong again, I will have to keep on telling > you because my mail server accepts all email regardless". > > And in the real world, I cannot think of many businesses that can > justify paying an email administrator to personally inform legitimate > and spoofed senders whether or not their email was sent to the correct > address. > > If you consider this an argument that you won, then you must like > losing more than 50% of the time :) > > ...D > > ------------------------------------------------------ > List Archives: http://www.webelists.com/cgi/lyris.pl?enter=isalist > ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp > ISA Server FAQ: http://www.isaserver.org/pages/larticle.asp?type=FAQ > ------------------------------------------------------ > Visit TechGenix.com for more information about our other sites: > http://www.techgenix.com > ------------------------------------------------------ > You are currently subscribed to this ISAserver.org Discussion > List as: tshinder@xxxxxxxxxxxxxxxxxx > To unsubscribe visit > http://www.webelists.com/cgi/lyris.pl?enter=isalist > Report abuse to listadmin@xxxxxxxxxxxxx > >