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Exchange 5.5 errors sending mail to specific address

Posted on 2004-10-19
Medium Priority
Last Modified: 2011-04-14
Hello all

Am having problems sending email to a particular address
recieve errors back in my mailbox saying:

DELIVERY FAILURE: Enhanced Mail System Status Code (RFC1893): 4.4.1 (Persistent transient failure - routing/network: no answer from host)

trying to telnet to address.how do i find out what address i should be telneting to on port 25
is it a dns address an mx record im not sure a bit new to this now so go easy on me
how do i go about finding this address that when i do telnet it is going to let me in
basically i was making sure i have the right address so i can add it to mailsweeper in routing
or if you know something else i can do just let me know

Question by:SoHandy
  • 3
LVL 10

Accepted Solution

munichpostman earned 1000 total points
ID: 12350921
DNS must be configured properly on the computer running the Nslookup.exe utility. If DNS is not configured, an error message is displayed when the Nslookup.exe utility starts.
Steps to Use the Nslookup.exe Utility
1. Open a command prompt.
2. Type the following:
3. Type the following:
set q=mx
This sets a filter to only collect Internet Mail Exchanger (MX) records and related information.
4. Type the following
where domain_name is the domain that you want to obtain the DNS records for, for example, microsoft.com or msn.com.
An output similar to the following is displayed:
Server: []

microsoft.com MX preference = 10, mail exchanger = mail1.microsoft.com
microsoft.com MX preference = 10, mail exchanger = mail2.microsoft.com
microsoft.com MX preference = 10, mail exchanger = mail3.microsoft.com
microsoft.com MX preference = 10, mail exchanger = mail4.microsoft.com
microsoft.com MX preference = 10, mail exchanger = mail5.microsoft.com
mail1.microsoft.com internet address =
mail2.microsoft.com internet address =
mail3.microsoft.com internet address =
mail4.microsoft.com internet address =
mail5.microsoft.com internet address =

LVL 10

Expert Comment

ID: 12350928
Here is a link how to use Telnet to test port 25 communication

LVL 10

Expert Comment

ID: 12350958
DELIVERY FAILURE: Enhanced Mail System Status Code (RFC1893): 4.4.1 (Persistent transient failure - routing/network: no answer from host)

The above error message means that the server which handles mail for the domain you were trying to send to was either not available or their DNS was misconfigured.


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