postfix vs sendmail

Http://dev.firnow.com/course/6_system/linux/Linuxjs/2008618/126266.html Reprinted Note:> after a lot of days of Sendmail and SMTP, I finally found this article is good. Article , Corresponding to my sendmail8.13 version, operating system redflag 2.6.18. Although I cannot find the original version, I am very grateful to the author of this article !!========================================== ==========================================How to configure th

1. Sendmail service software packageSendmail-8.13.8-2.el5.i386.rpm: the master package for the sendmail service, which must be installed on the server side. Sendmail-cf-8.13.8-2.el5.i386.rpm: sendmail macro file package sendmail-devel-8.13.8-2.el5.i386.rpm:

Domainkey Introduction: Yahoo's technology is known as the "DNS-side electronic signature (DomainKeys)", designed to deal with a variety of spam messages that have been transformed. Spam often cheats the user by altering the e-mail message, and users tend to mistakenly think that this is not spam, and that the likelihood of opening a view is increased. Yahoo's "DomainKeys" allows e-mail-receiving systems to check for e-mails to determine whether the sender's identity is false. "DomainKeys" v

Found/var/spool/postfix/maildrop This directory occupies more than 10G of space, the Internet to find the same problem, the reason is:Since Linux executes cron, the output and warning information in cron execution scripts will be sent to the Cron owner in the form of a message, and the mail is not sent successfully because SendMail and postfix in the customer's e

Article Title: Configure main. cf with postfix. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Main. cf See/usr/share/postfix/main. cf. dist for a commented, more complete version Debian specific: Specifying a file name will cause the first Line of that file to be used

When sending an email, Postfix uses the system's resolver (that is, the DNS client, which can query domain information from the DNS server) to obtain DNS information. When receiving a mail, the DNS of your domain must provide delivery information (MX or a record) for external queries so that other MTA can find your Postfix server. Influence of DNS on the sender Program The smtp mda of

Article Title: RedHat6.2 server configuration solution (6): Sendmail. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Author: Tang haijing 　　 Chapter 6 Sendmail 6.1 Introduction Email Service is the most important network service that users need. Web communication is lar

Email Service The email service is based on the customer/server model. For a complete email system, it consists of three components. 1. The user agent interface between the user and the email system is responsible for sending emails to the mail server and receiving emails from the mail server. MUa (Mail User Agent) Mail User proxy, used to send and receive mail programs, the mainstream is outlook, Foxmail evolution Thunderbird 2. the email server is the core component of the email system. MTA (M

First, uninstall the original postfix:[[Email protected] ~]# service postfix stop[Email protected] ~]# chkconfig postfix off[Email protected] ~]# rpm-e postfix--nodepsSecond, in order to achieve virtual user authentication based on MySQL, first install MySQL(I am here by compiling the installation MySQL-5.6.33(Universa

Article Title: Install and set the SENDMAIL mail server. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Sendmail is often a "Forbidden Zone" for general system administrators, because most system users have high requirements and dependencies on E-Mail, it can be said th

So far, our main focus has been onPostfixThe role played at the end of the delivery path. That's it. That is, emails sent to the postfix server are mainly delivered to the local system. However, postfix also plays a role Another role-a repeater located in a postal path. Backup Switch In DNS terminology, MX represents mail exchanger. An MX record represents the owner of a domain that receives external emails

Sendmail is an excellent Mail System in Linux. Without any setup, the source address of the sendmail e-mail address is like a userid@localhost.localdo, which is identified as SPAM or rejected by almost all mailboxes. 1. Install Sendmail In CentOS, sendmail is generally installed with the operating system by default. If

Article Title: how to separate the mail users on the Sendmail server from the system users. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Sendmail is one of the most widely used SMTP servers on the Internet. However, Sendmail