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Install PHP Pear Mail / SMTP package on CentOS / Red Hat Enterprise Linux

Recently I’ve noticed that Redhat removed support for following php pear packages:

a) NET/SMTP : An implementation of the SMTP protocol

b) Mail : Class that provides multiple interfaces for sending emails

c) Net/Socke : Network Socket Interface

The simplest solution is downloading and installs these files from php pear repo.

Step # 1: Download files

Use wget command to download all files:
# cd /tmp
# wget http://download.pear.php.net/package/Mail-1.1.14.tgz
# wget http://download.pear.php.net/package/Net_SMTP-1.2.10.tgz
# http://download.pear.php.net/package/Net_Socket-1.0.8.tgz

Untar all files:
# tar -zxvf Mail-1.1.14.tgz
# tar -zxvf Net_SMTP-1.2.10.tgz
# tar -zxvf Net_Socket-1.0.8.tgz

Step # 2: Install files

Simply copy file to your webroot such as /www/usr/share/pear or standard location such as /usr/share/pear:
# cd /usr/share/pear
# mkdir Net
# cd Net
# cp /tmp/Net_SMTP-1.2.10/SMTP.php .
# cp /tmp/Net_Socket-1.0.8/Socket.php .
# cd ..
# cp -avr /tmp/Mail-1.1.14/Mail/ .
# cp -avr /tmp/Mail-1.1.14/Mail.php .

Step # 3: Test SMTP email

Now you have required files, all you have to do is send email using authenticated smtp server.

Sysadmin because even developers need heroes!!!

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Sendmail is only accepting connections from localhost ( IP)

Q. My sendmail service is running under Linux and whenever I try to telnet it from other LAN IP, it gives connection refuse error. If I connect it from localhost it accept connection. I can only send mail from my server only. How do I force sendmail to accept mail from other hosts/LAN ips?

A. For security reason sendmail is by default configured to accept connection from local system ( This should avoid open mail relay problem.

To allow connections from ALL hosts/LAN IPs open sendmail.mc file (login as the root):

# vi /etc/mail/sendmail.mc

Look for line that read as follows:

DAEMON_OPTIONS(`Port=smtp,Addr=, Name=MTA’)dnl

Comment or remove above line and insert new line that read as follows:


Above line will force to accept connection from any host. Save the file. Regenerate sendmail configuration file using m4:

# m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf

Restart sendmail service :

# /etc/init.d/sendmail restart

Caution: You should configure firewall and other Sendmail Anti-Spam configuration control to avoid problems.

See also: