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Exchange 2013 DNS Settings


MX Records

The MX records tells DNS servers on the internet where your IP address, or ,in an exchange environment, where our servers, are located. So DNS servers know where to send incoming messages to. Without proper MX records, mail will be delivered to a previously known mail server prior to migration, or will either simply remain ignored without being delivered, or be returned with a failure notification as the current valid mail address/server cannot be found.

In your clients DNS settings set up the following MX records:

 

PLEASE NOTE: Ensure that these are the only MX records applied to the domain name.




CNAME Autodiscover Record

The CNAME Autodiscover entry is needed in order for Exchange 2013 and Outlook 2007/2010/2013 to function properly. This would especially relate to:

 

The Autodiscover service uses a user's e-mail address and password to automatically configure a user's profile. Using the e-mail address, the Autodiscover service provides the following information to the mail client:

In your clients DNS settings set up the following CNAME record:

 
• autodiscover.yourdomain pointing to autodiscover.cloudplatform1.com




SPF Record

IMPORTANT: the type 99 SPF record has been deprecated and is no longer recognised by many mail providers. The recommendation is to use a TXT record (type 16).

The SPF record is necessary due to the fact that a significant majority of spam comes from forged addresses. A Sender Policy Framework (SPF) standard is being implemented by a number of ISPs and mail hosts, including several major providers (Hotmail, Yahoo, AOL and cloud-based hosting providers etc). Those providers require SPF to be used in order to allow mail through their networks. Mail systems need SPF records for their domains if they want their mail to be accepted by those providers. If no SPF record is in place your domain emails will be flagged and scored as high probability spam items and will not get delivered to the intended recipients.

 

In your clients DNS settings set up the following TXT record: include:spf.cloudplatform1.com

 

The TXT record should resolve to: v=spf1 include:spf.cloudplatform1.com -all

 

Important:



See also

Exchange 2010 DNS Settings
New - Exchange 2016 DNS Settings
New - Webmail (Exchange 2016)
Web Access (OWA)
Checking DNS Records