We help IT Professionals succeed at work.
Get Started

Best practice to move mail servers

667 Views
Last Modified: 2012-05-12
I have to move email hosting from one server to another and are looking for the best practice for this procedure, in terms of continuity of email delivery with the least amount of changes at the email client level.

Currently, we are hosted on one server that all of the MX records are pointing to.  Email clients are checking this mail server for new email and are leaving mail on the server for up to 10 days before deleting it.  Most employees are also using iPhones and iPads to check email.  All email clients are using POP and SMTP.

I know I can configure the new mail server, confirm it works, then switch the MX records, BUT the time it takes for the changes to get picked up all over the Internet means that some mail will continue to be delivered to the current server while some gets sent to the new server.  The same applies to the email clients.  Some clients will pickup the DNS change and start checking the new mail server (this assuming that I use the same mail server name and just update the IP), while other email clients will continue to check the old mail server for longer.

So what is the best practice to move to a new mail server, while allowing the email clients to get every last new email from the old mail server, then switch over without issue to checking the new mail server, all the while without having to visit and touch every client to setup a new mail account to check both servers during the transition?
Comment
Watch Question
Top Expert 2011
Commented:
This problem has been solved!
Unlock 1 Answer and 5 Comments.
See Answer
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE