How to install pop3 in sendmail linux mail server
To install POP3 (Post Office Protocol version 3) on a Sendmail Linux mail server, you'll need to follow these steps:
Step 1: Install the required packages
You'll need to install the sendmail
and pop3d
packages. The exact package names may vary depending on your Linux distribution. Here are some common package names:
- On RHEL/CentOS/Fedora:
sendmail
andpop3d
- On Ubuntu/Debian:
sendmail
andpop3d
(ordovecot-pop3d
if you prefer to use Dovecot instead of Sendmail's built-in POP3 server) - On openSUSE:
sendmail
andpop3d
You can install the packages using the package manager of your Linux distribution. For example, on RHEL/CentOS/Fedora:
sudo yum install sendmail pop3d
On Ubuntu/Debian:
sudo apt-get install sendmail pop3d
On openSUSE:
sudo zypper install sendmail pop3d
Step 2: Configure Sendmail
Edit the Sendmail configuration file /etc/sendmail.cf
(or /etc/mail/sendmail.cf
on some systems) using a text editor:
sudo nano /etc/sendmail.cf
Add the following lines at the end of the file:
Dpop3dPath /usr/sbin/pop3d
Dpop3dArgs -l /var/log/pop3d.log
These lines tell Sendmail to use the pop3d
daemon and specify the log file location.
Step 3: Configure the POP3 server
Create a new file /etc/pop3d.conf
(or /etc/mail/pop3d.conf
on some systems) using a text editor:
sudo nano /etc/pop3d.conf
Add the following lines to the file:
AuthType default
AuthInfoMethod login
ListenAddress 127.0.0.1
Port 110
These lines configure the POP3 server to listen on localhost (127.0.0.1) on port 110.
Step 4: Restart Sendmail and POP3
Restart the Sendmail and POP3 services to apply the changes:
sudo service sendmail restart
sudo service pop3d restart
Step 5: Test the POP3 server
Use a POP3 client (such as telnet
or a mail client like Thunderbird) to test the POP3 server:
telnet localhost 110
You should see a response from the POP3 server. You can then login using your email username and password to retrieve your email.
That's it! You should now have a working POP3 server on your Sendmail Linux mail server.