> In our tests, about 20% to 40% of legitimate E-mail is sent from a > mailserver with no reverse DNS entry (oddly enough, probably about 1/2 of > them have admins that swear that they do have a reverse DNS entry!).
With many of the admins I have dealt with over the years, they have reverse DNS setup but not completely. They may have domain.com setup and may even have mail.domain.com. But then they go and name their mail server name.domain.com and that is what the email says it is coming from. I run into this with schools all the time. Remember, there is no test or certification needed to set up a mail server... and more than once I have been asked "What is RFC?". Sheldon Sheldon Koehler, Owner/Partner http://www.tenforward.com Ten Forward Communications 360-457-9023 Nationwide access, neighborhood support! "Whenever you find yourself on the side of the majority, it's time to pause and reflect." Mark Twain 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/
