Internet Resource

Install Postfix to Send Email Instead of Sendmail in Centos LNMP

If your email can’t work in LNMP or in centos, why not change it to Postfix? Which is simple and faster than sendmail!

What is Postfix? It is Wietse Venema’s mail server that started life at IBM research as an alternative to the widely-used Sendmail program. Now at Google, Wietse continues to support Postfix.

Here we go!

yum remove sendmail  

Then we can install postfix now!

Install Postfix

yum install postfix  

Change the default MTA to Postfix

/usr/sbin/alternatives --set mta /usr/sbin/sendmail.postfix  

OK, recheck it changed to postfix or not

alternatives --display mta  

Edit Postfix, use vi to edit the

vi /etc/postfix/  

Open the, remove the # and edit

myhostname =  
mydomain =  
myorigin = $mydomain  
inet_interfaces = all  
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain  
mynetworks =,  
relay_domains =  
home_mailbox = Maildir/  

Here is the full file of, what you need to do is change our domain to your own domain.


If you don’t love vi to edit online, you can download the and upload to your server /etc/postfix/ to replace the default one.

Test and start the Postfix

service postfix status  

// if the postfix didn’t start, use the following command,

service postfix start

Set it start when you start your server

chkconfig postfix on  

OK, you have installed the Postfix, but wait, you need to edit the sendmail path in php.ini

Edit the php.ini

vi /usr/local/php/etc/php.ini  

Use ?sendmail_path to find the sendmail_path, you will find the default setting as follow:

;sendmail_path =  

Press “i” to edit, change it into

sendmail_path = /usr/sbin/sendmail -t -i  

Press Esc to quit, then use :wq to save and quit.

Restart the php-fpm

/etc/init.d/php-fpm restart  

OK, test your email now!