Category E-mail

DNS, E-mail

MX Record

MX Record a short for Mail Exchanger Record. The Domain Name System uses it to associate a particular domain name with emails, so that when someone sends an email to your domain, the MX records route it to the correct…

Elvis Plesky
October 21, 2019

E-mail, Protocols

POP3

POP3 is the most up to date version of the Post Office Protocol, and it lets email applications retrieve email messages from email servers. This means that wherever you access a web-based email service you can get at your mail.…

Elvis Plesky
October 16, 2019

E-mail

Postfix

Postfix is a hugely-popular Mail Transfer Agent (MTA) designed to determine routes and send emails. This cross-platform server is open-source, free, and suitable for installation on the majority of UNIX-like operating systems. Numerous client and server programs make up Postfix:…

Elvis Plesky
January 30, 2021

E-mail

QMAIL

qmail is a mail transfer agent ( MTA ) written in late 1995 by Daniel J. Bernstein. It was designed to run on UNIX and to serve as a replacement for Sendmail, albeit with higher security. While this software was…

Elvis Plesky
January 30, 2021

E-mail

RoundCube

RoundCube is a popular IMAP web-based email client, known for utilizing AJAX (Asynchronous JavaScript and XML) technology. This open-source, free software operates under the rules of the GNU GPL (General Public License), except for the plugins and skins. RoundCube’s original…

Elvis Plesky
January 30, 2021

E-mail

Sendmail

Sendmail is a Mail Transfer Agent (MTA) designed for email routing, offering support for a variety of email transfer and delivery options. With Sendmail, Simple Mail Transfer Protocol ( SMTP ) is utilized for transporting messages across the Internet efficiently.…

Elvis Plesky
January 30, 2021

E-mail, Protocols

SMTP

SMTP stands for Simple Mail Transfer Protocol, an application layer protocol. The client who wants to send the mail opens a TCP connection to the SMTP server and sends the mail via this connection. The SMTP server is always on…

Elvis Plesky
October 17, 2019

E-mail

SPAM

A use of electronic messaging systems in order to send out unwanted messages in a bulk. To stop the SPAM is not a technical issue but mostly an economical one – the possible visibility in comparison to costs is still…

Elvis Plesky
October 21, 2019

E-mail

SPAM filter

The name SPAM started life in 1937 as a brand of canned cooked pork that made it easy to deliver meat to soldiers on the front line. Unfortunately, these days you’ll notice is the name of the unwelcome emails that…

Elvis Plesky
October 21, 2019

E-mail

SpamAssassin

Let’s take a look at SpamAssassin—the Swiss army knife of spam detection. Spam is unwanted or unsolicited email that is sometimes malicious. Spam filters were created to be one of the easiest ways of detecting and blocking this kind of…