How to Set up a Postfix email server in Linux:

[Switch] how to set up a Postfix email server in Linux: postfix email server

I set up an email server on my own server to write a shell script for alarm monitoring. When an accident occurs on the server, you can send the email server to your mailbox in time.

I have read two tutorials and constructed them according to the two tutorials. Thank you for the original work.

How to Set up a Postfix email server in Linux:

1. First disable the sendmail service

Service sendmail stop

2. chkconfig sendmail off (disable auto-start upon startup)

3. Modify the DNS resolution file so that DNS can resolve the mailbox service.

Add the following two lines

Mail.zhubf.com. in a 172.17.17.2

Zhubf.com. in mx 10 mail.zhubf.com.

Restart DNS

Service named restart

Chkconfig named on

Echo "">/etc/resolv. conf

Test whether DNS settings are correct.

Host mail.zhubf.com

Mail.zhubf.com has address 172.17.17.2

4. Install the postfix package (install yum and configure the yum source)

Yum install-y postfix

Modify the postfix configuration file

Vim/etc/postfix/main. cf

The main content is as follows:

5. Configure saslauthd. This software is installed by default.

Modify the saslauthd configuration file

Vi/etc/sysconfig/saslauthd

Set MECH = shadow

Service saslauthd restart

Chkconfig saslauthd on

Create an email user

Useradd zhubf

Passwd zhubf

Echo zhubf | passwd -- stdin zhubf

Password verification test

Testsaslauthd-u zhubf-p 'zhubf'

0: OK "Success ."

If it fails, it may be a firewall or selinux setting problem.

Add the following permission settings to the postfix master configuration file/etc/postfix/main. cf:

Smtpd_sasl_auth_enable = yes

Smtpd_sasl_local_domain =''

Smtpd_recipient_restrictions =

Permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination

Broken_sasl_auth_clients = yes

Smtpd_client_restrictions = permit_sasl_authenticated

Smtpd_sasl_security_options = noanonymous

Restart the postfix Service

Service postfix restart

Chkconfig postfix on

Another helper tutorial is: http://www.cnblogs.com/dudu/archive/2012/12/12/linux-postfix-mailserver.html

Well written.