smtp forwarding

This article describes how to allow QMail to add smtpd-auth functionality. Software Requirements System version: RedHat6.2 Required Software: 1, qmail-1.03 (www.qmail.org) qmail main package 2, Checkpassword (cr.yp.to/checkpwd.html) Let qmail use the system user authentication password Authentication package or Vpopmail (Www.inter7.com/vpopmail) Let QMail support MySQL and virtual host user authenticated password authentication package 3, QMAIL-SMTPD.C (WWW.NIMH.ORG/HACKS/QMAIL-SMTPD.C) qmail su

SMTP protocol Principle SMTP-Simple Mail Transfer Protocol) is the protocol that defines mail transmission. It is an application layer protocol based on the TCP Service, defined by rfc0821. The commands specified by the smpt protocol are in plaintext. To To describe how SMTP works, we will describe it by sending an email to www.linuxaid.com.cn. In Linux, use

1. E-Mail SendingThe client is sent to the server side, and the Postfix software provides MTA,MDA. MTA provides SMTP service, accepts mail (reads DNS MX record)--"Save MDA transfer mail MUA user agent1-1 the server submits the e-mail message to TCP port 25 by using the SMTP protocol, or by a local client/usr/bin/sendmail the program for submission. If the MTA is the final target location, the message is pas

################## #邮件服务 ######################## 1. Related concepts and preparatory work SMTP: (Simple Mail Transfer Protocol) is simply Mail Transfer Protocol, which is a set of rules for sending messages from source to destination to control how the letters are transferred. The SMTP protocol belongs to the TCP/IP protocol cluster, which helps each computer find the next destination when sending or relay

Qmail has a configuration file named rcpthosts (the file name originates from the rcpthosts command), which determines whether to accept an email. This email is accepted only when the domain name of the recipient address in the rcpthosts command exists in the rcpthosts file. Otherwise, the email is rejected. If the file does not exist, all emails will be accepted. Qmail has a configuration file named rcpthosts (the file name is derived from the rcpt to command), which determines whether TO accep

notification to the sender. If you know The downtime of the changer exceeds five days, which can be appropriately increased. Forwarding list Postfix: you can know your backup switch role from the relay_domains parameter and the DNS system, but how does it know Which of the following are valid recipients of a channel-based domain? If the standby switch does not know in advance what is valid for the primary Switch Email, which is bound to be forced to

A script that sends an e-mail message may be one of the most common scripts you can find on a Web site, although it's simple, a mail script can sometimes make programmers very frustrated. There is a function called mail () in PHP that only needs to know the receiver's address and the subject of the letter to send the message, but to have mail () run the way you want it to work you still need to solve some tricky problems. To enable mail () to run, you must have an

mail server server documentation domain login command Directory (?) [+] SMTP Protocol Analysis1th Chapter.SMTP Overview 1.1. The location of SMTP in mail communication SMTP, the Simple Mail delivery protocol, corresponds to the RFC document RFC821. As with most application layer protocols like HTTP, it works in C/S mode and is used to deliver mail on the Internet

Because of its simplicity and convenience, email has become the most successful application on the Internet. There are thousands of email servers on the Internet to provide services for users. Each server has dozens to millions of or more user mailboxes. Users send and receive emails through user agents such as FoxMail and MS Express. The content of the emails includes the common text information, you can also append information such as images, audios, and videos. The

When you are still in the tangle php built-in mail () function can not send mail, then you are very lucky now, this article can help you! PHP uses the SMTP class to send mail is very good, I used a long time, basically did not have a problem. This blog backstage, when the blogger reply to the message, will automatically send a new reply to users of the message is also used in this method to achieve. The way the