Updated: February 25, 2021
Since Axigen is an email server, a typical setup involves a number of DNS configurations.
The following page is a quick summary of DNS records that need to be set up for each domain, followed by detailed instructions on how to do it.
For simplicity purposes, the examples below use the same hostname for all services —
If needed, you can as well set up different hostnames — e.g.
Please note that in order to use different hostnames you will need either an SSL certificate for each hostname or SAN (Subject Alternative Name) certificates that cover all your hostnames.
FQDN (Fully Qualified Domain Name) A Record
This is the address used to reach the mail server
MX (Mail Exchanger) Record
Specifies the mail server responsible for accepting email messages on behalf of a domain name
PTR Record (Reverse DNS Record)
Usually set by the Internet Service Provider and is used as an AntiSpam method
SPF (Sender Policy Framework) Record
SPF is an email authentication method designed to detect email spoofing. It allows the receiving party to check that an email from a specific domain comes from an IP address authorized by the owner of that domain, by looking up the list of authorized hosts and IP addresses for that domain in the DNS.
DKIM (DomainKeys Identified Mail) Record
DKIM is an email authentication method designed to detect email spoofing. It allows the receiving party to check that an email from a specific domain is actually authorized by the owner of that domain, by looking up the sender's public key in the DNS.
The "p" value need to be split to 256 characters per line.
Here's an example on how to generate this on Linux, using your existing public key:
In our example, if a message claims to be from
domain.tld and fails the DMARC checks, it gets rejected all the time, and the daily aggregate reports are emailed to
ActiveSync / Outlook / eM Client (autodiscover) and Thunderbird (autoconfig)
DNS Based Auto-discovery
Setting up a Hostname for Each Axigen Service
To get more detailed information on DNS and auto-discovery configuration in Axigen, please see: