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Changing A record on 1&1 Internet hosted domain

Posted on 2013-11-21
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Last Modified: 2013-12-16
I always understood that in a configuration where email is hosted by an external company and downloaded to an Exchange server using POP, then to open the Exchange server for external Outlook web access, the procedure was to have your hosting company create an additional A record (eg owa.mydomain.com) pointing to the IP address of your Exchange Server, then open your ports 80 / 443 of router, and then to configure IIS appropriately.
In this case, mail is hosted by 1&1 Internet. Their FAQs state:
"If you are using the 1&1 name servers (DNS), you can change the DNS settings (DNS zones, DNS records) such as the A record. The A record is the DNS record that holds which IP address the domain should point to. By default, this will point to the IP address for your 1&1 hosting package however you can always change this so that the domain points to a different IP address."
So in other words you can change the A record via their Control Panel but you can't create an additional A record eg owa.mydomain.com.
I called them up and they told me changing the A record was the correct procedure, but I'm extremely sceptical and feel if I do this my mail will no longer be held on their servers and will stop working. Not comfortable about doing this at all. Other providers' portals let you create as many A records as you like and do not force you to change the primary A record in this way.
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Question by:laurencoull
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Enphyniti earned 435 total points
ID: 39667474
1and1 will let you create another a record like you describe, but it's goofy.

Go to manage domains, check the domain you want to edit.  Select the "New" dropdown button and select "Sub-domain"  enter owa and select your domain from the list to create owa.yourdomain.com.

This will now be available in your list of domains.  To set the IP, check that domain and select the DNS-Edit DNS dropdown button and insert your IP.

Not intuitive at all, but it works.
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by:laurencoull
ID: 39667533
Ah! Yes it all makes sense now! Not intuitive indeed, but yes it looks like it will work!
And I guess I leave both the Name Server & Mail Server MX Record at the default "1&1 Mail Sevrer" selection from their dropdowns?
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by:Enphyniti
ID: 39667560
Yeah, leave those alone.  If you're not sending mail with the @owa.yourdomain.com then the MX records don't matter, but the Name Server one is what sets the DNS authority for your new entry to 1and1 (where you'll now be entering the IP address for owa)

I haven't registered a new domain with 1and1 for years, but I inherited a bunch and it's too much of a pain in the butt to move them.
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