Typically DNS on TrueAdmin is managed without user
participation, but in some rare cases you need to add custom
records to your DNS zone. An example would be when a user wants
all email to be processed by an external mail server rather than
by the built-in mail system, or when it is necessary to add more
A, MX or CNAME records. However, such user intervention requires
knowledge of DNS configuration and a clear understanding of what is
to be done.
Not all plans allow DNS customization - please ensure that the
plan you have selected provides this service.
To customize your DNS, go to the Edit domain page and
click the Edit icon in the DNS Configuration field:

This link will take you to the DNS Configuration page:

On this page you can see several blocks of DNS records. Some
are built-in and non-removable; others are user-defined and can be
deleted. Built-in MX records require special consideration: they
can be removed, but all e-mail resources, including mailboxes,
forwarders, and autoresponders will also be deleted. The removal
of TrueAdmin email services was made possible to enable the use
of e-mail services provided by other mail servers.
You can add any type of DNS records by clicking an appropriate
link. You will be asked to enter corresponding DNS data.