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Exchange 5 "Host not found" error

Posted on 1998-04-16
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Last Modified: 2013-12-23
I'm using Exchange Server 5 (w/ SP2) on NT 4.0. Sometimes users cannot send messages  and get an " Host
Unknown" error. We run our Primary DNS (NT's DNS Manager), Exchange and NT on the same server. We have tested the DNS server which did not give any errors.

> > -----Original Message-----
> > From:      System Administrator
> > Sent:      Wednesday, March 25, 1998 4:45 PM
> > To:      Dan Goldberg; Ed Dougherty
> > Subject:      Undeliverable: RE: BOM Items Issue-4
> >
> > Your message did not reach some or all of the intended recipients.
> >
> >       Subject:      RE: BOM Items Issue-4
> >       Sent:      3/25/98 4:45 PM
> >
> > The following recipient(s) could not be reached:
> >
> >       Dan Goldberg on 3/25/98 4:45 PM
> >             The recipient name is not recognized
> >             MSEXCH:IMS:kinergy pte ltd:KINERGY:S1 3902 (000B0981) Host
> > Unknown
> >
> >       Ed Dougherty on 3/25/98 4:45 PM
> >             The recipient name is not recognized
> >             MSEXCH:IMS:kinergy pte ltd:KINERGY:S1 3902 (000B0981) Host
> > Unknown
> >

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Question by:chewfh
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Accepted Solution

by:
mpopal earned 100 total points
ID: 1571832
The error that your getting from the Non Delivery Report is due to either the domain name for the recipient is not correct or the recipient does not exist on that domain's mail server.
The Internet has "Global" Domain Name Servers that resolve Domain Names to systems. If this domain name is not found, it cannot be routed any further.
An NDR on a message with the correct domain name but the incorrect user name looks like the following:


   Your message did not reach some or all of the intended recipients.

      To: 'hello@cibc.ca'
      Subject: test
      Sent: 3/27/97 11:21:30 AM

   The following recipient(s) could not be reached:

      hello@cibc.ca on 3/27/97 11:21:30 AM
            Recipient Not Found
            MSEXCH:IMC:CIBC:SCCB:NT70177PDC

This error is a "Recipient Not Found" error. The mail got to the other system, but the username (Hello, in this example) did not exist. This error is again most likely due to a sender's addressing error. Check the address again, and resend.

You can also read the article at knowledge base. Navigate to http://support.microsoft.com/support/kb/articles/q168/5/57.asp.

Good luck.
0
 

Author Comment

by:chewfh
ID: 1571833
The domain name for the recipient IS correct an the recipient DOES exist on that domain's mail server. The sender has been using the same e-mail addresses all along. When I use NSLOOKUP to check the destination server, it is working fine. The DNS Manager on our NT server is also set up by a Microsoft SOlution Provider. Could it be the address book's use of 'Display Name' is having a problem?
0
 

Author Comment

by:chewfh
ID: 1571834
The domain name for the recipient IS correct an the recipient DOES exist on that domain's mail server. The sender has been using the same e-mail addresses all along. When I use NSLOOKUP to check the destination server, it is working fine. The DNS Manager on our NT server is also set up by a Microsoft SOlution Provider. Could it be the address book's use of 'Display Name' is having a problem?
0
 

Author Comment

by:chewfh
ID: 1571835
The domain name for the recipient IS correct an the recipient DOES exist on that domain's mail server. The sender has been using the same e-mail addresses all along. When I use NSLOOKUP to check the destination server, it is working fine. The DNS Manager on our NT server is also set up by a Microsoft SOlution Provider. Could it be the address book's use of 'Display Name' is having a problem?
0
 

Author Comment

by:chewfh
ID: 1571836
The domain name for the recipient IS correct an the recipient DOES exist on that domain's mail server. The sender has been using the same e-mail addresses all along. When I use NSLOOKUP to check the destination server, it is working fine. The DNS Manager on our NT server is also set up by a Microsoft SOlution Provider. Could it be the address book's use of 'Display Name' is having a problem?
0

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