When an email recipient of your message requests to be removed from any future communication, this is called unsubscribing. Unsubscribes do not negatively affect your sender reputation.

A list purchased, rented, or somehow obtained from an outside company. The email addresses on the list have not specifically signed up to receive mail from your company, but have opted in through the [..]

An A Record, short for Address Record, maps from an IP address to a domain name. An A record is also referred to as a host or hostname.

The AAAA resource record type is a record specific to the Internet class that stores a single IPv6 address.

The Access Control List, which on the Managed DNS system is a set of permissions for determining who may edit what for a given zone. Each zone has its own ACL and all zones are created with a default [..]

Active Failover enables your website to stay up and running – all while making the experience a seamless one for your visitors. When an outage is detected, your traffic is automatically re-routed to a [..]

Admin is a user Role within Managed DNS. Admins have the second-highest level of access, being able to create zones, add services to zones and edit ACLs.

See CNAME.

Alt tags provide alternative text on an image that is displayed if the email client is set to not display images or if a slow connection has delayed the load of an image.

Data to be included in a DNS query response. Must include a record type (A, AAAA, CNAME, SRV, etc.), but (in the context of Dynamic Steering) does not need to include an associated domain name or spec [..]