Sorry, I couldn't find any host named (#5.1.2)

Posted on 2006-07-11
Last Modified: 2009-02-24
I CONFIGURED EXCHANGE 2003 SUCCESSFULLY , i can send email on loca area connection but when send from outside it bounced back and show following errors.

I am running business server 2003 and exchange server 2003 and i have also open routers ports but i dont know what to do next to solve this problem

Hi. This is the qmail-send program at
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.

Sorry, I couldn't find any host named (#5.1.2)

Sorry, I couldn't find any host named (#5.1.2)

--- Enclosed are the original headers of the message."

Can someone help in this regards.


Question by:ezlog
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LVL 74

Accepted Solution

Jeffrey Kane - TechSoEasy earned 500 total points
ID: 17080236
have you registered this host name in your public DNS Zone file (usually at your ISP or domain registrar)?

Perhaps you should review this guide?

You'll also find that is a good source.


Author Comment

ID: 17080349
we could sent out emails without any problems. Could you please advice, i have one static ip address from my ISP, should i enter that ip address on our doman management panel or should we give something else.

here is my configuration details

Physical Address: 00-E0-06-09-55-66
IP Address:
Subnet Mask:
Default Gateway:
DNS Servers:,,
WINS Server: is our default gateway and is server address

My static ip is

when i call to my ISP today and asked them their name server,
They gave me two ip address which are     primary secondry

Now my question, which one i should enter into our domain side , i mean that where we registered domain name, what ip address i should put it there, i am little bit confused as My server ip address is something eles, static ip is diffirent and given ip addresses from ISP are diffirent too.

Could you advise me in this matter.


LVL 74

Expert Comment

by:Jeffrey Kane - TechSoEasy
ID: 17080527
You need to enter a HOST record and an MX record in your PUBLICLY hosted DNS ZONE file.  This is not something you enter in your own server... it has to be out on the Internet where other servers will find it.  

Since your domain was registered at you need to go to that site and use the Domain Manager to modify the DNS records where you will enter these two records.  If you are unsure of how to do that, click on the help feature of the Domain Manager site.


Author Comment

ID: 17080639
i m there already so i need to put following ip address     primary secondry

Is that correct or do i have to put my static ip

Please advice
LVL 74

Expert Comment

by:Jeffrey Kane - TechSoEasy
ID: 17080783
This is why I recommended that you review the overal idea of these things...     primary and secondry are your OUTBOUND nameservers.  Those are only for you to use on your server so that you can reach the Internet from your LAN.

Since you need others to find YOU, you will need to put at least TWO if not THREE records in your domain manager.

If you are hosting a website somewhere other than your server you will just want to put the FQDN as a HOST record  7200   in     A  

(the 7200 TTL -- time to live -- is just a suggestion.  there may be no choice on this at the ISP)

then you need to designate your HOST ( as your mail server for the domain with an MX record:   7200     in     MX     0

after completeing these, you can check them at either or 


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