For your domain name to work with Office365, you need to add certain DNS records, such as CNAME, SRV, and TXT.
To add CNAME records:
sip
sipdir.online.lync.com.
webdir
webdir.online.lync.com.
Be certain to include the terminating full stop in the address box, or the record will be invalid.
You may also need to create SRV records:
Be certain to include the terminating full stop in the address box, or the record will be invalid.
You may also be asked to set up a TXT record for your domain name. This is only used to verify that you own your domain.
The Office365 ‘Add A Domain’ Wizard will provide you with the values that you need to create this record. They will look like the following:
Alias or Host Name = @
Destination or Points to address = MS=ms000000001
TTL = 1 Hour
To add the TXT record to your domain name:
As a note, where we have ‘Subdomain’ is often where other hosting companies will have ‘Alias or Host Name’. Some companies will expect an ‘@’ to mark a blank space, but we simply use the blank space.
Please wait approximately 24 hours for the DNS changes to propagate across the Internet.
Article ID: 215
Created On: Tue, Mar 10, 2015 at 5:18 PM
Last Updated On: Thu, Apr 23, 2015 at 11:20 AM
Online URL: https://www.heartinternet.uk/support/article/how-do-i-set-up-the-dns-records-needed-for-office365.html