Solved

Smtp service in IIS is not sending emails

Posted on 2003-11-14
10
1,465 Views
Last Modified: 2010-04-14
Our webserver will not send out emails.    It gives the following message:

"Message delivery to the remote domain "abc.com" failed for the following reason:  an internal DNS error caused a failure to find the remote server."

"DNS server unable to interpret format"

This is a web server that sends out password requests, account application responses and order emails.  

The smtp service is running on the machine and the DNS servers are set right in TCP/IP properties.  

PLEEEEAAASSEEE HELP ME!!

Thank you,

Carrie
0
Comment
Question by:cleighchandler
10 Comments
 
LVL 11

Expert Comment

by:adonis1976
ID: 9750107
r u using a firewall? if yes, make sure that port 25 is open.
0
 
LVL 2

Expert Comment

by:Mihailo
ID: 9750121
0
 

Author Comment

by:cleighchandler
ID: 9750150
I never saw a comment to this questions
0
Migrating Your Company's PCs

To keep pace with competitors, businesses must keep employees productive, and that means providing them with the latest technology. This document provides the tips and tricks you need to help you migrate an outdated PC fleet to new desktops, laptops, and tablets.

 

Author Comment

by:cleighchandler
ID: 9750156
Sorry, I'm new to this site.  Just getting used to using it...
0
 

Author Comment

by:cleighchandler
ID: 9750582
Should there be two domains in the smtp service?
0
 
LVL 11

Expert Comment

by:adonis1976
ID: 9750633
here is a link that will allow you to test your smtp services

http://support.microsoft.com/default.aspx?scid=kb;en-us;286421&Product=win20

here is a link how to setup those

http://support.microsoft.com/default.aspx?scid=kb;en-us;303701

to answer your question. I dont think u need two domains for SMTP service
0
 

Author Comment

by:cleighchandler
ID: 9751505
Tested the smtp service and this is what it gave me:

"Could not open a connection to host on port 25:  connect failed"
0
 
LVL 21

Accepted Solution

by:
marc_nivens earned 500 total points
ID: 9756609
What kind of DNS server is the SMTP server using?  IIS 5.0 sends TCP DNS queries by default, not UDP.  Some DNS servers do not allow TCP queries, firewalls can sometimes only have port 53 UDP open and not TCP, etc... to test this, launch nslookup.  Type "set vc" (no quotes) then run a query.  If it fails, and otherwise works without typing "set vc", then this is your problem.  If this does turn out to be it, get with the DNS/firewall admins and find out where the point of failure is.
0
 

Author Comment

by:cleighchandler
ID: 9798805
I'm not quite sure how to figure that out.  I have opened command prompt and started nslookup.  I typed in set vc and pushed enter and it didn't do anything.  Should it bring something back?  
0
 

Expert Comment

by:jimheuton
ID: 9924986
Thanks a million marc_nivens!!  This was the exact problem I was seeing and as soon as I opened up port 53 (TCP) on my firewall the mail started flowing!!  Leave it to good ol' Microsoft to do things differently (like not using the standard UDP port 53 for DNS)...
0

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

NTFS file system has been developed by Microsoft that is widely used by Windows NT operating system and its advanced versions. It is the mostly used over FAT file system as it provides superior features like reliability, security, storage, efficienc…
This article describes how to reset your Windows 10 password when you've forgotten it.
This video shows how to quickly and easily add an email signature for all users on Exchange 2016. The resulting signature is applied on a server level by Exchange Online. The email signature template has been downloaded from: www.mail-signatures…

828 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question