postfix vs sendmail

The test environment is a Aliyun Centos 5.4 32-bit system. 1, if installed SendMail, the first uninstall. The code is as follows Copy Code Yum Remove SendMail 2, install Postfix The code is as follows Copy Code Yum install Postfix 3, change

Tags: DMA names build other internet Dom href 51cto domainIntroductionPostfix is an MTA (mail transfer agent) software developed by Wietse Venema under the GPL agreement of IBM. Postfix is an attempt by Wietse Venema to provide alternatives to the most widely used sendmail. In the Internet world, most e-mails are delivered via SendMail, and about 1 million users

Postfix is currently the mainstream Linux mail server, which is the MTA, mainly used to implement the SMTP protocol, it can be compatible with SendMail, and postfix is to improve the sendmail and production produced.Generally speaking, the advantages of postfix than

1./etc/postfix/main. cf code metadata = noqueue_directory =/var/spool/postfixcommand_directory =/usr/sbindaemon_directory =/usr/libexec/postfixmail_owner = fixmyhostname = mail. unicoms 1./etc/postfix/main. cf codeSmtp_delay_reject = noQueue_directory =/var/spool/postfixCommand_directory =/usr/sbinDaemon_directory =/usr/libexec/postfixMail_owner = postfixMyhostname = mail.unicomsys.cnMydomain = unicomsys.cn

Link: http://jk.aiwaly.com/wp/postfix-clean-deferred.html Postfix is a powerful and powerful email post office software with three times faster performance than sendmail. yueda pengpeng recently launched product promotion activities by email.The email server disk is full, and too many emails cannot be reached in the deferred directory are found. The following met

Install and configure sendmail in Ubuntu, using tusendmail Because the project requires an email server function and there are various restrictions on using the existing enterprise mailbox, it is a great deal of related things. Generally, there are several options, such as Postfix, sendmail, and qmail. I used the first one before, but the project only needs to se

server, and then send the message by dialing on the server. At this point we can specify the value of this parameter: Defer_transports = SMTP This statement indicates that Postfix deferred posting all the messages until the SENDMAIL-Q command was executed, so We can add sendmail-q to the PPP script to let Postfix s

1. ComponentsOperating system centos5.4Postfix:mtaCLAMD: Anti-Virus engineSpamAssassin: Anti-spamAmavisd-new: Middleware between the Mail proxy Server (MTA) and antivirus softwareFail2ban: Preventing mailbox Brute Force cracking2. Working principle650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/59/E0/wKioL1TukjbQ14n5AAC9vajd2qY593.jpg "title=" principle. jpg "alt=" Wkiol1tukjbq14n5aac9vajd2qy593.jpg "/>Step one: Postfix receive mail (MTA)

Problem: Server memory close to exhaustion alarm, ps-ef view has more than 3,000 processes, most of them are Crond, SendMail, Postdrop,650) this.width=650; "Src=" Http://s1.51cto.com/wyfs02/M02/86/57/wKiom1e8Mlnh-_VMAAHhhlDNX-g544.png-wh_500x0-wm_3 -wmp_4-s_1616375282.png "title=" Qq20160822233402.png "alt=" Wkiom1e8mlnh-_vmaahhhldnx-g544.png-wh_50 "/>It can be found that Postdrop is initiated by SendMail,

-chroot-9.8.2-0.17.rc1.el6_4.6.i686rpcbind-0.2.0-11.el6.i686samba-winbind-3.6.9-164.el6.i686bind-libs-9.8.2-0.17.rc1.el6_4.6.i686packagekit-device-rebind-0.5.8-21.el6.i6866. Installing DovecotYum Install libmysqlclient*Yum Install libmysql*Yum Install perl*Yum Install DovecotQuery Software Installation StatusRpm-qa|grep postfixpostfix-2.6.6-2.2.el6_1.i686Rpm-qa|grep Dovecotdovecot-2.0.9-19.el6_7.2.i6867. Switch the MTAAlternatives--config MTARPM-E SendMailcd/usr/sbin/LsMV

:55:55 config: Warning: Obsolete setting in /etc/dovecot/dovecot.conf:88: add auth_ prefix to all settings inside auth {} and remove the auth {} section completely In this case, run the following command in the/etc/dovecot/directory: doveconf -n > dovecot-new.conf This command will convert dovecot. conf to a standard configuration file. We can replace dovecont. conf with the new file dovecot-new.conf. Note the following details during Configuration: That is, set the default MTA, uninstall

Postfix is the MTA (Mail transfer agent) software developed by Wietse Venema under the IBM GPL protocol. Postfix is an attempt by Wietse Venema to provide alternatives to the widest possible sendmail, let's look at the Postfix configuration installation method. Install Postfix