Re: Cannot send to Hotmail or MSN

On Fri, 24 Nov 2006 08:07:02 -0800, Christo
<Christo@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:

Thanks for the response Andy. Our ISP hosts the DNS for mail. Their routers
basically control our network. Because we run MS 2003 there is the 'internal'
dns but there are no records for anything outside my internal domain.

Then how do people send mail to you? :)
Check your domain here:
www.dnsreport.com

When you send mail to external domains, you either send it directly or
your smatrhost it to another server.
What you need to check is that the externally routable ip address of
the sending server has a PTR:
www.dnsstuff.com



"Andy David - MVP" wrote:

On Fri, 24 Nov 2006 07:48:01 -0800, Christo
<Christo@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:

We currently host internal Exhange and POP/SMTP from Outlook 2003 desktop for
external/domain email. Our ISP hosts the domain side of things. We cannot
send to hotmail or msn domains...and a few other domains are
sketchy/intermittent. 95% of all our other email sends fine. When the email
gets returned I see an error similar to the following; (mail username has
been changed)

First thing to look at: Do you have a PTR record in DNS for your
sending mail server?


Reporting-MTA: dns;smtp.nexicom.net

Final-Recipient: rfc822;user@xxxxxxx
Action: delayed
Status: 4.4.7
Will-Retry-Until: Sat, 25 Nov 2006 16:04:02 -0500
X-Display-Name: user@xxxxxxx

It does eventually fail with; (yes this is different failed message than
above)

'user@xxxxxxxxxxx' on 11/23/2006 2:12 PM
Could not deliver the message in the time limit specified.
Please retry or contact your administrator.
<smtp.nexicom.net #4.4.7>

Our ISP says it is our Exchange server bouncing the messages as he see's this;

postmaster@xxxxxxxxxxxxxxxxx (names changed by me)

I have checked many KB's and can't come up with anything....like I said
above...hotmail and msn are the two causing the worst headache.

Thanks in advance.


.

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