DNS and MX records on a Windows 2003 Server

Posted on 2005-04-26
Medium Priority
Last Modified: 2012-05-05
A partner in our firm was having some problems sending e-mail to a client.  After serveral troubleshooting steps we found there was no MX record for the client's domain in our cached lookups.  I did an nslookup with the command set type=mx and recorded the MX record for the clients domain.  E-mail started to flow through again.  For some reason though, the record keeps disappearing and then e-mail won't go out again.  Looking at the TTL for the record it is set to 1 hour.  So my guess is that after one hour it will disappear again.  Is there any way to make this record permanent or change the TTL on it?  It's grayed out so I don't know if that's an option but it's very frustrating.  I'm not a DNS expert by any means and would appreciate any information on how this works and any help.
Question by:steyerhuber

Expert Comment

ID: 13866958
DNS should be updated automatically. What you do when you try to send a mail is to send a request out to internet regarding a certain domain. The DNS in that domain will answer back with a MX record to tell where to send mail. You said that you could do a nslookup to see the correct mx record, did you do that from the client with a problem since to me it looks like a problem on that workstation with dns queries
LVL 25

Expert Comment

ID: 13867140
what do you use for your email server? exchange or what?  Can you explain more about how your email system is set up. POP3, MAPI etc?
LVL 13

Accepted Solution

eatmeimadanish earned 750 total points
ID: 13867731
This is an external DNS issue.  It sounds like either you are not hitting the mx record on the ISP or you have a conflicting entry.  When you setup an MX record in your own DNS you bypass the need for an ISP mx record.  Has this user checked their MX record with whoever hosts their Domain name?

Author Comment

ID: 13867785
We are currently using Lotus Domino v6.5.1 in a hub and spoke configuration.  All inbound and outbound Internet email goes through the hub.  This hub requests the MX recoird from our internal DNS server which in turn then deliver the sent mail.   99.9% of the time there is not a problem.  It just seems to be one to two MX records that are not correct on an "on-going-basis".
LVL 74

Expert Comment

by:Jeffrey Kane - TechSoEasy
ID: 13873268
You really shouldn't host your own DNS locally... is your local DNS the Start of Authority for your zone file??  Go to http://dnsreport.com and see what it says about your DNS...

Ideally you want your public DNS zone including your MX record on a level 2 or 3 -- highly available name server so all of your traffic gets routed quickly.  If you don't have a remotely hosted service already, you can use a service like zoneedit.com or one of these:  http://directory.google.com/Top/Computers/Internet/Protocols/DNS/DNS_Providers/


Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

Numerous times I have been asked this questions that what is it that makes my machine log on so slow, there have been cases where computers took 23 minute exactly after taking password and getting to the desktop. Interesting thing was the fact th…
Recently, I had the need to build a standalone system to run a point-of-sale system. I’m running this on a low-voltage Atom processor, so I wanted a light-weight operating system, but still needed Windows. I chose to use Microsoft Windows Server 200…
In a question here at Experts Exchange (https://www.experts-exchange.com/questions/29062564/Adobe-acrobat-reader-DC.html), a member asked how to create a signature in Adobe Acrobat Reader DC (the free Reader product, not the paid, full Acrobat produ…
When cloud platforms entered the scene, users and companies jumped on board to take advantage of the many benefits, like the ability to work and connect with company information from various locations. What many didn't foresee was the increased risk…

829 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