Hi,
I see this problem a lot. The most common resons are that mail relay has
not been disallowed and therefore the mail server is black listed. Another
common issue is the DNS resolver list on the box providing the Exchange
server is not the same as the list on the remote side. For example, the box
has a RAS setup dialing into an ISP with a DNS resolver of 172.16.10.2 and
yoy can ping, trace even use a browser but not send Email. Checking the
network card on the same box it has a resolver of 198.2.2.2. Changing the
DNS resolver address on the network card to the 172.16.10.2 all becomes fine.
I would see this several times a week.
Just a thought
Teunis
Hobart, Tasmania
Australia
n Monday, July 16, 2001 at 04:32:24 PM, Dennis Olson wrote:
> I too have a similar problem that is yet unresolved. Mine however seems to
> be to any site hosted by criticalpathway.net. Try pinging that
> smtp.whateversiteitis.com or change smtp to mail and see if
> criticalpathway.net ends up in the name.
>
> ----- Original Message -----
> From: "Ayers, Michael"
> To:
> Sent: Monday, July 16, 2001 10:08 AM
> Subject: RE: Off Topic: DNS issue !!! [7:12448]
>
>
> > I've seen this error with the Microsoft DNS caching servers and some
> > Internet Unix boxes. Seems to be a DNS compatibility issue.
> >
> > Here is the Scenario. You have a Microsoft DNS server that your exchange
> > server uses? If so, try adding another Internet DNS server to the
> Exchange
> > server's DNS server search order.
> >
> >
> >
> >
> > Thank You,
> >
> >
> > Michael Ayers
> > Network Engineer
> > > OneNeck IT Services
> > (480) 539-2203
> > (800) 272-3077
> >
> >
> > -----Original Message-----
> > From: Raees Ahmed Shaikh [mailto:[EMAIL PROTECTED]]
> > Sent: Sunday, July 15, 2001 10:50 PM
> > To: [EMAIL PROTECTED]
> > Subject: Off Topic: DNS issue !!! [7:12448]
> >
> > Dear Friends,
> >
> > I am facing a very strange problem with our Mailing System
Exchange5.5sp4.
> > The issue is that we are not able to send email message to some of the
> sites
> > on the internet. Most of the other popular sites , you can say 90% of
the
> > sites are reachable by our email clients. But when the clients try to
> send
> > message to those few site, they get and Non-Delivery-Report saying that
> the
> > mail could not be delivered. Strange enough that email address is
> > reachable through yahoo, hotmail and other sites.
> >
> > I have checked our router for any access-list blocking but I am sure
> nothing
> > is of that sort, no access-lists are controlling those addresses. Our ISP
> > from whom we are connected to the internet is also able to reach that
> sites.
> > But we using the ISP's DNS servers for name resolution cannot connect to
> > those particular hosts.
> >
> > One strange behavior though, when I tried to trace route a website add,
> for
> > that particular mail host, I is taking more than 15 hops and then
declared
> > unreachable by our Static Router, No Dynamic protocol is running between
> us
> > and our ISP, we are using default route.
> >
> > Any help or insights would be valuable and really be appreciated.
> >
> > I know this has nothing to do with Cisco, but the fact is Applications,
> and
> > User Usability is driving the Technology. so this mail is not so uncommon
> > for a Cisco SE.
> >
> > Thanks and Regards,
> >
> > S. Raees
> >
> > [GroupStudy.com removed an attachment of type image/jpeg which had a name
> of
> > Glacier Bkgrd.jpg]
> > Privileged/Confidential Information may be contained in this message or
> > attachments hereto. Please advise immediately if you or your employer do
> > not consent to Internet email for messages of this kind. Opinions,
> > conclusions and other information in this message that do not relate to
> the
> > official business of this company shall be understood as neither given
nor
> > endorsed by it.
--
www.tasmail.com
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=12728&t=12448
--------------------------------------------------
FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
