This article provides the DNS records required for the various Office 365 hosted services.



Exchange


MX Record

 Record Type
Host
Destination Data
Priority
TTL
 MX (Mail Exchanger)
@
customerdomain-com.mail.protection.outlook.com
10
1 hour

Note: Replace "customerdomain-com" in the MX record with your actual domain name.  For example, if your domain is "widgets.net", you would enter "widgets-net.mail.protection.outlook.com".


Autodiscover Record

 Record Type
Host
Destination Data
TTL
CNAME (Alias)
autodiscover autodiscover.outlook.com
1 hour


SPF Record

Record Type
Host
Destination Data
TTL
TXT (Text)
@
v=spf1 include:spf.protection.outlook.com -all 1 hour



Lync


Record Type
Host
Destination Data
TTL
CNAME (Alias)
sip
sipdir.online.lync.com
1 hour
CNAME (Alias)
lyncdiscover
webdir.online.lync.com
1 hour


Record Type
Host
Destination Data
Protocol
Service
Priority
Weight
Port
TTL
SRV (Service)
@
sipdir.online.lync.com
_tls
_sip
100
1
443
1 hour
SRV (Service)
@
sipfed.online.lync.com
_tcp
_sipfederationtls
100
1
5061
1 hour



For additional assistance, the following Microsoft Support Article provides step-by-step configuration instructions specific to the most popular Domain hosting providers:


Create DNS records for Office 365 when you manage your DNS records