Re: DNS and email problem

Thanks Jenny for this valuable information.

Fred, I don't think we are the only ones encountering this problem.

Let's share information on this. I'll look at these records tomorrow or on
Monday.

Bryce.


"Fred" <apextester@xxxxxxxxxxx> wrote in message
news:1141971004.352681.193310@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Have exactly the same problem with similar environment. Does it with
particular AOL and Comcast E-mail addresses.

Only thing is, I have been unable to recreate the problem using a
Comcast account.

Configured a Comcast account with full spam filtration and no problem.


Seems there is a wierd spam filter for certain accounts from AOL and
Comcast of which rejects mail sent from an invalid IP address and
domain name association. It may only be doing it with newly created
accounts at Comcast, AOL and others of where a certain query is
executed to filter off illegitmate mail...unfortunately doing it also
to legitimate mail having a bad mail server setting.

Found a link at Comcast of which shed a bit of light having to do with
reverse DNS, yet am still way in the dark on this:

http://www.comcast.net/help/faq/index.jsp?faq=Email118405

There is manager at the SBS of which allows for configuring the DNS of
which is yet another gordian knot from Microsoft to deal with.

Will be up late tonight researching this problem.

If you figure it out, please let me know.

Fred

Bryce wrote:
Hello:

I get emails back with this message: (I assume it's coming from our
exchange
server, maybe?)

---------------------------------------------
Your message did not reach some or all of the intended recipients.
Subject: Our company's name
Sent: 3/9/2006 4:24 PM
The following recipient(s) could not be reached:
'macy.fox@xxxxxxxxxxx' on 3/9/2006 4:24 PM
There was a SMTP communication problem with the recipient's email server.
Please contact your system administrator.
<ourcompany.org #5.5.0 smtp;521-EHLO/HELO from sender 70.xx.xx.xxx does
not
map to ourcompany.org in DNS>

-------------------------------------


What can I do. It looks like there is a DNS problem on our end?
99% of our email is fine though, but this person can't get anything to
comcast and sometimes to aol accounts.


Bryce.



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