Terminology

DKIM

DomainKeys Identified Mail: a system for digitally signing email that provides the means to securely verify that the email's origin is legitimate.

DNS

Domain Name System: a naming system for computers, services, or any resource connected to the Internet or a private network (i.e. that identifies "google.com" with its internet protocol address)

MTA

Message transfer agent: an email relay service, i.e. Postfix, QMail or Exim4.

SMTP

Simple Mail Transfer Protocol: a network protocol for sending email to a remote server, often involving password authentication and end-to-end SSL encryption.

SSL

Secure Sockets Layer (a.k.a Transport Layer Security) a method of connecting to a remote network host that encrypts traffic on any given network protocol that uses it.

TLS

Transport Layer Security a method of connecting to a remote network host that encrypts traffic on any given network protocol that uses it.

cron

(See wikipedia:Cron): a job scheduler for UNIX-like operating systems

installation directory

The directory (folder) on the web server where X2Engine is installed. You will know that you are operating within this directory when you see the following subdirectories:

• assets

user menu

The menu accessed by clicking on one's own username in the far upper-right-hand corner of the application.