> > I guess my question is if DNS was setup perfectly to where any > > request for resolution to the OHN returned a public IP, but the > > Imail registry value for address for the OHN was a private IP, would > > Imail still announce itself as using a private IP? > > Let's go over this again, just FTR. > > The fact that you are using RFC 1918 addresses on your mail host, and > NATting them at the firewall, is totally immaterial. There's no way > for these IP addresses to be "announced" to servers on the public Net. > They aren't routable. > > What's material is that you're setting up IMail to use a HELO whose > corresponding A record points to an RFC 1918 address. Despite the fact > that there's some part of "DNS roundtrip" test you might think you > pass, that's at root an *extremely bogus* HELO, and it shouldn't > surprise you that remote servers balk at allowing connections from > you. the presence of additional private addresses in the zone is also > a bad idea, though here if the only information a remote server has > tested is the HELO, that's bad enough.
What I am doing is taking one step at a time. I have learned in the past that making too many changes at once creates domino problems. After changing my network configuration 2 weeks ago, I am going over everything to make sure routing and DNS are working as expected before making the next set of changes which is the configuration of the e-mail server itself including change of OHN and utilizing a smart host for outbound delivery. That was going to take place on a new server to be built. However, as Darin pointed out in another post I did not even think of changing the OHN of the Imail server now instead of later. I will do that in the next day or two as long as no fires start burning. John T eServices For You "Seek, and ye shall find!" To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
