|
DNS record
|
Purpose
|
Value to use
|
|
CNAME
(Exchange Online)
|
Helps Outlook clients to easily connect to the Exchange
Online service by using the Autodiscover service. Autodiscover
automatically finds the correct Exchange Server host and
configures Outlook for users.
|
Alias: Autodiscover
Target: autodiscover.outlook.com
|
|
MX
(Exchange Online)
|
Sends incoming mail for your domain to the Exchange Online
service in Office 365. If you want mail delivery to go to your
old mail system, you will want to leave the existing MX records
with a higher preference/priority.
|
Domain: For example, hsa.com
Target email server: <MX token>.mail.protection.outlook.com
Preference/Priority: 0/low
To set up your MX record, you will need to get your specific
“MX token” by looking at the list of DNS records for your
domain. To find it, choose your domain on the domain manager
page in Office 365 (Admin > Domains or Admin > Manage your
organization > Manage your domains for website and email), and
then choose Manage DNS > View DNS records.
What
is MX priority?
|
|
SPF (TXT)
(Exchange Online)
|
Helps to prevent other people from using your domain to send
spam or other malicious email. Sender policy framework (SPF)
records work by identifying the servers that are authorized to
send email from your domain.
 Note:
|
| Ensure any existing SPF records for other email
distribution software remain in place (such as
records for marketing email). |
|
TXT Name @
Values: v=spf1
include:spf.protection.outlook.com –all
|
Note:
|
| If the firewall or proxy server blocks TXT
lookups on an external DNS, you should also add this
record to the internal DNS record. |
|
|
TXT
(Exchange federation)
|
Used for Exchange federation for hybrid deployment.
|
TXT record 1: For example, contoso.com and
associated custom-generated, domain-proof hash text (for
example, Y96nu89138789315669824)
TXT record 2: For example,
exchangedelegation.contoso.com and associated custom-generated,
domain-proof hash text (for example, Y3259071352452626169)
|
|
CNAME
(Exchange federation)
|
Helps Outlook clients to easily connect to the Exchange
Online service by using the Autodiscover service when your
company is using Exchange federation. Autodiscover automatically
finds the correct Exchange Server host and configures Outlook
for your users.
|
Alias: For example,
Autodiscover.service.contoso.com
Target: autodiscover.outlook.com
|
