You have now worked your way through the signup process and should have access to your account, and the ability to create mailboxes as needed.
Once you've created mailboxes for your domain, the last step is to setup the Mail Exchange (MX) records to route incoming email to your new Rackspace Email accounts.
For further help with account setup prior to this step, please refer to Rackspace Email & Apps official documentation.
For the sake of this article, when configuring MX records in the SliceManager, I'll be using "domain1.com" as an example domain.
In all, you need to create two distinct records for your domain. Each record needs to be entered precisely as shown in this article, including the "Auxiliary Info".
NOTE: If you have API access enabled for your account, you can use this handy DNS Zone creator that is compatible with the SliceManager. It will create the 5 basic DNS records as well as the MX records discussed in this article. Please keep in mind this application is not sponsored by Slicehost, but it can prove very useful.
Log into the SliceManager and navigate to the DNS Panel:
As you can see, a DNS zone is setup for "domain1.com", and I've already populated it with 5 basic DNS records.
Primary MX Record
As mentioned previously, you'll create two distinct MX records for your domain.
To create the first one, click "Records" and then "new record".
Next you'll select "MX" from the "Type" dropdown menu and enter the values:
In the fields I've entered the following:
Auxillary Info: 10
Note the ending periods '.' for the Name and Data values.
Secondary MX Record
After creating the first MX record — your primary record —you're taken back to the records page for your domain.
Click "new record'" again, and complete the form as before to create your secondary MX record.
Auxillary Info: 20
Once you've created the primary and secondary MX records for your domain, the SliceManager should display a list similar to this one:
[For clarity's sake in this tutorial, I removed the zone's A and NS records before taking the screenshot.]
Whenever you create or modify DNS records, it's a good idea to check whether they're working properly. You can do that easily with the 'dig' command:
dig @dns1.stabletransit.com domain1.com MX
The QUESTION and ANSWER sections of its output should look like this:
;; QUESTION SECTION: ;domain1.com. IN MX ;; ANSWER SECTION: domain1.com. 86400 IN MX 10 mx1.emailsrvr.com. domain1.com. 86400 IN MX 20 mx2.emailsrvr.com.
All looks good there.
Now let's test your ability to send and receive email.
Login to our Rackspace Email & Apps account and send an email to an address in another domain — a personal Gmail or Yahoo address makes for a good test.
If it goes through, great, you can send email!
Now let's reply to that message. Did the reply come through? If so, you're all set.
All seems to be working: you can now send and receive emails for your domain using Rackspace Email & Apps.
Once you've purchased an account with Rackspace Email & Apps and created the necessary mailboxes, setting up MX records is very easy.
Rackspace Email & Apps is a nice way of implementing commercial-grade email for your domains without the added hassle of configuring and running your own mail server.
You'll also benefit from other features of the service, such as virus protection and spam filtering for your domains.