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Configure DNS Records for Hosted Email

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This article will outline how to configure your DNS records to point to the Domain Name Sanity Hosted Email servers.
Note: Do not make any DNS changes until the domains and mailboxes are set up on the Domain Name Sanity Email Service system.

Types of DNS records

There are many types of records that the DNS system maintains. The important record types for the Domain Name Sanity Email Service are MX and CNAME records.

Email Exchange (MX) records

The Email Exchange (MX) record is the line within the DNS zone file that directs email for a specific domain to the appropriate email server. It tells the rest of the world where a mailbox is located.
Zone file—A file on a root server that contains domain name registration information. Zone files contain information that is needed to resolve domain names to IP addresses and also contain all the information related to one domain. Zone files are also called master files.
MX—Short for mail exchange record, an entry in a domain name database that identifies the mail server that is responsible for handling emails for that domain.
When more than one MX record is entered for any single domain name that is using more than one mail server, the MX record can be prioritized with a preference number that indicates the order in which the mail servers should be used. This enables the use of primary and backup mail servers.

Canonical Name (CNAME) records

A Canonical Name (CNAME) record is a record in a DNS database that indicates the true or canonical host name of a computer. A computer hosting a Web site must have an IP address in order to be connected to the World Wide Web. The DNS resolves the computer’ domain name to its IP address, but sometimes more than one domain name resolves to the same IP address, and this is where the CNAME is useful. A machine can have an unlimited number of CNAME aliases, but a separate CNAME record must be in the database for each alias.
Domain Name Sanity uses CNAME records to identify the POP, IMAP, and SMTP server. It allows users to access email at <yourdomain>.com instead of <yourdomain>.cust.hostedemail.com, which is the active domain on the Domain Name Sanity system.
Note: Do not use A records or IP addresses in place of CNAME hostnames. If an A record is used to identify the Domain Name Sanity email server, email service will be disrupted if Domain Name Sanity changes the IP address.

Mail DNS configurations

You can use this simple example to configure the required DNS records for your domain to use Domain Name Sanity's Hosted Email service.The DNS records are as follows (replace supportexample.com with your_domain.tld):

mail.supportexample.com. CNAME mail.supportexample.com.cust.hostedemail.com.
supportexample.com. MX mx.supportexample.com.cust.hostedemail.com. Priority 0
supportexample.com. TXT "v=spf1 include:_spf.hostedemail.com ~all"

If you have any questions about configuring the mail service records for your domain, please contact our support team.

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