?
Solved

DNS splitting: How to do it exactly?

Posted on 2006-10-22
8
Medium Priority
?
519 Views
Last Modified: 2013-12-24
Hi,

I need to have a webserver hosted at a completely different server hosting company than the email server.

How can I exactly do this (step by step)?

Thanks

Su
0
Comment
Question by:Sumukha
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
8 Comments
 
LVL 39

Expert Comment

by:redseatechnologies
ID: 17785034
Hi Sumukha,

That is pretty straight forward.

You need an A record for each server.

one for "www" that points at the hosting company
one for "mail" that points at the mail server

Then you need an MX record, pointing to mail.domain.com

Finally, you will need a PTR record for your mail server

Are you trying to configure this yourself?  If so, with what DNS server?

Hope that helps,

-red
0
 

Author Comment

by:Sumukha
ID: 17785391
Hi red,

That was fast...

I will probably have to do it myself, logging into the contol panel of the registrar which seems to be easydns.com.

The email is currently on one server, I need to set up the web server somewhere else. without any interruption for the mailserver.
 
I hope there will be no time out for the email server when the DNS is changed?
0
 
LVL 39

Accepted Solution

by:
redseatechnologies earned 100 total points
ID: 17785427
If all you are doing is moving www, then it should be relatively simple.

Just change the IP address of the alias for WWW (it should be obivous)

While it should be relatively quick, as you are only modifying a record, I wouldn't be taking the old server offline for at least 48 hours

-red
0
Efficient way to get backups off site to Azure

This user guide provides instructions on how to deploy and configure both a StoneFly Scale Out NAS Enterprise Cloud Drive virtual machine and Veeam Cloud Connect in the Microsoft Azure Cloud.

 
LVL 15

Assisted Solution

by:periwinkle
periwinkle earned 100 total points
ID: 17788453
Right now, what is your mx record?  Does it point to mydomain.com or www.mydomain.com (replace mydomain.com with your actual domain name)?  If so, BEFORE moving the web server, you should set up an A record for mail.mydomain.com to point to your mail server, and then point your MX record there.  You then need to wait for the information to propagate.  Then, move the A record for www.mydomain.com (and presumably, mydomain.com, if you want that to resolve for your website).  The MX record (which indicates the mail server) will then be entirely independent of the A recores for www.mydomain.com and mydomain.com - it will point to whatever mail.mydomain.com is, and there will be no problem.
0
 
LVL 5

Expert Comment

by:onlinerack
ID: 17875762
beware your email will be down for a bit while DNS replicates... so make sure you access the old email server after 48 hours or so to see if there are any  emails missed and delivered to the old mailbox.
0
 
LVL 8

Expert Comment

by:susanzeigler
ID: 18056813
Expanding on what periwinkle said. If your MX is set to www.mydomain.com, add the new A record for mail.mydomain.com and create an additional MX record for it. Set that new MX record to a higher priority (i.e. lower numbered preference).

Basically the MX portion of your DNS will be something like this:

mydomain.com.             IN       MX       10          www.mydomain.com.
mydomain.com.             IN       MX        5           mail.mydomain.com.

This will ensure that mail will continue to be delivered no matter what. After 72 hours, you can remove the MX record for www.mydomain.com. At that point, you can make the change to the A record for www.mydomain.com at any time. Do note that there will be a period of 24-72 hours where some people will not be able to view the website due to DNS caching and propagation.
0

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

When you try to share a printer , you may receive one of the following error messages. Error message when you use the Add Printer Wizard to share a printer: Windows could not share your printer. Operation could not be completed (Error 0x000006…
This month, Experts Exchange’s free Course of the Month is focused on CompTIA IT Fundamentals.
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…
Michael from AdRem Software outlines event notifications and Automatic Corrective Actions in network monitoring. Automatic Corrective Actions are scripts, which can automatically run upon discovery of a certain undesirable condition in your network.…
Suggested Courses

770 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