Postfix is one of the best mail transfer agents for Linux servers. Here's how you can configure a Postfix server installation on Debian.

E-mail is one of the most basic messaging methods used since the development of the internet. This has led to the development of many messaging tools and protocols. There are protocols for the compatible operation of systems with different architectures.

E-mail servers perform tasks such as not losing user e-mails, and assisting users in accessing their e-mails when they're online. The tools that provide e-mail transmission on local intranets and the internet are called Mail Transfer Agents (MTA).