[thelist] SMTP / DNS problems

Joshua Olson joshua at waetech.com
Fri Jan 3 09:16:01 CST 2003

----- Original Message -----
From: "Jake Aust" <jake at lovejoycreative.com>
Sent: Thursday, January 02, 2003 8:47 PM

> oops....that was a typo. The domain is 'fischercommunications.com.' If you
> look at the headers to the email message you'll see that I just typed it
> wrong in my post.


Some mail engines require that the sending domain have a valid reverse
lookup.  That is, it will do a reverse lookup on the originating IP and
check to see that the IP originates from a valid domain.  A reverse lookup
on fischercommunications.com (which is the destination) reveals that the IP
address belongs to web.digitronicweb.com.  If you do a reverse lookup on the
server's IP that is sending the mail, do you get a valid domain name?

I used http://eamnesia.com/hostinfo/ipinfo.jsp to do the lookup, btw.


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