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Vitaly Dilmukhametov

I purchased Office 365 subscription recently, and wanted to bind my own domain, because wanted to use e-mail address like alias@some_custom_domain.com

If you want to use custom domains, manual page suggest to change name server records for your domain to ns1.bdm.microsoftonline.com and ns2.bdm.microsoftonline.com. After doing this you can use aliases with your domain for Exchange mail and Lync.

If you don’t want to change by any reasons name servers for your domain, just go through steps:

1) open Domains page in your admin

2) click on your custom domain my_custom_domain.com

3) on the domain page click DNS Dispatcher

4) you can see “system’s” Office 365 MX, CNAME, TXT and SRV records (screenshot in my native Russian lang, but I think it’s not a problem to understand):

image

Add this records to your domain, and wait some time (about 10-30 min). After that you can use your custom domain to create users with full access to Office 365 services, and without using MS name servers.

Warning! This method is NOT suitable for any enterprise customers!! Because if “system” records are changed, your users can’t use one or any services (Exchange, Lync, etc) until you manually fix your domain records.

I tried to do it, and it’s working. I use Office 365 privately, so I wake up to a risk.

Good luck! ;)

Posted on Tuesday, July 19, 2011 1:18 PM workaround , hint , Office 365 , DNS , Domain , Exchange | Back to top


Comments on this post: MS Office 365 – custom domain without MS name servers

# re: MS Office 365 – custom domain without MS name servers
Requesting Gravatar...
Have no risk. Office 365 is a reliable platform. :)
Left by Sergey Zwezdin on Aug 02, 2011 4:21 AM

# re: MS Office 365 – custom domain without MS name servers
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This looks very helpful, though when I tried it, the MX record had blank fields, not the info I would need to add it to my current DNS system,
Type: MX
Priority: (blank)
Hostname: @
Points to Address: (blank)
TTL: (blank)

There was a TXT record too but I don't see how it would direct mail for my domain:

Type: TXT
Priority: (blank)
Hostname: @
Points to Address: v=spf1 include:spf.protection.outlook.com -all
TTL: 1 Hour

Thanks,
Charlie
Left by Charlie on Feb 04, 2013 11:37 PM

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