Solved

DNS change / email delivery / MX and A records

Posted on 2010-11-30
8
693 Views
Last Modified: 2012-08-14
Let's say we've an organization named Test, with a domain test.org. The test.org domain is currently registered through Go Daddy but the DNS is not through Go Daddy, its handled by another vendor. I plan to switch the DNS to Go Daddy, but how can I do this so that email will be routed without their being any email downtime? In Go Daddy, once I set the DNS to be handled in Go Daddy, I can't set all the MX and A records until the DNS change takes effect, which seems like that would create a few hours(?) in which email won't be delivered. Thanks for your help.
0
Comment
Question by:canalicomputers
  • 4
  • 3
8 Comments
 
LVL 3

Expert Comment

by:ggupta7
ID: 34238389
0
 
LVL 33

Expert Comment

by:Dave Howe
ID: 34238401
add a new MX record pointing to the new mailserver, with a smaller number than the existing records. that should cause all mail to go to the new mailserver, while the dns is still hosted at the old location

then move dns; it doesn't matter which record a sending mailserver sees at that point, it will be sufficient to ensure the new server gets the mail.

the only key element is making sure the new mailserver will accept mail for your domain before you have moved dns.
0
 
LVL 33

Expert Comment

by:Dave Howe
ID: 34238412
I should add - between adding the new MX record and moving dns, allow *at least* 48 hours. that will cause cached results at various sites/isps to expire and the new record to be acquired.
0
Microsoft Certification Exam 74-409

Veeam® is happy to provide the Microsoft community with a study guide prepared by MVP and MCT, Orin Thomas. This guide will take you through each of the exam objectives, helping you to prepare for and pass the examination.

 

Author Comment

by:canalicomputers
ID: 34238474
Thank you, but how do I addMX records in Go Daddy before moving DNS? Currently, it just says "not hosted here" and I dont think theres any way to add records. It seems like you have to move DNS before editing.
0
 
LVL 33

Expert Comment

by:Dave Howe
ID: 34238817
no, you add records where the dns is hosted *now*, let the dust settle, then move dns.
0
 

Author Comment

by:canalicomputers
ID: 34238940
Ah ok, but once I make the move, how will Go Daddy know of the records in the old DNS location?
0
 
LVL 33

Accepted Solution

by:
Dave Howe earned 500 total points
ID: 34238985
they won't have to.

provided you are pointing to the same mail server before and after the move, it doesn't matter if the records are an exact match or not - just that mail goes to the right place.

often if you are migrating to a new provider, they will ask for a "zone file" to import, so as to save setup time - you can make those quite easily, they are basically a txt file containing the dns records. Otherwise, you will usually have a time interval between when godaddy accepts the dns transfer, and when the TLD records are updated, as usually the TLDs (such as dot com or dot net) are only updated every 6 hours or so, and it takes noticably longer before isp caching servers even notice.  You can use that time to create (using the godaddy dns editing interface, whatever that is) the records you need in their new home.
0
 

Author Closing Comment

by:canalicomputers
ID: 34292621
Thanks
0

Featured Post

Windows Server 2016: All you need to know

Learn about Hyper-V features that increase functionality and usability of Microsoft Windows Server 2016. Also, throughout this eBook, you’ll find some basic PowerShell examples that will help you leverage the scripts in your environments!

Question has a verified solution.

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

Suggested Solutions

#Citrix #Citrix Netscaler #HTTP Compression #Load Balance
Most of the applications these days are on Cloud. Cloud is ubiquitous with many service providers in the market. Since it has many benefits such as cost reduction, software updates, remote access, disaster recovery and much more.
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
Here's a very brief overview of the methods PRTG Network Monitor (https://www.paessler.com/prtg) offers for monitoring bandwidth, to help you decide which methods you´d like to investigate in more detail.  The methods are covered in more detail in o…

808 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