Yes, We will run the command [sudo apt-get install postfix].
To ensure you will get the newest version, you have to run below first.
sudo apt-get update
sudo apt-get upgrade
Then you can go with [sudo apt-get install postfix]
You will see some log like below.
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
libgnutls-dane0 libunbound8
Use 'sudo apt autoremove' to remove them.
Suggested packages:
procmail postfix-mysql postfix-pgsql postfix-ldap postfix-pcre postfix-lmdb postfix-sqlite sasl2-bin | dovecot-common libsasl2-modules
| dovecot-common postfix-cdb ufw postfix-doc
The following packages will be REMOVED:
exim4-base exim4-config exim4-daemon-light
The following NEW packages will be installed:
postfix
0 upgraded, 1 newly installed, 3 to remove and 0 not upgraded.
Need to get 1,412 kB of archives.
After this operation, 62.5 kB disk space will be freed.
Do you want to continue? [Y/n] y
Get:1 http://ftp.udx.icscoe.jp/Linux/raspbian/raspbian buster/main armhf postfix armhf 3.4.23-0+deb10u1 [1,412 kB]
Fetched 1,412 kB in 2s (774 kB/s)
Preconfiguring packages ...
(Reading database ... 221744 files and directories currently installed.)
Removing exim4-daemon-light (4.92-8+deb10u7) ...
Removing exim4-base (4.92-8+deb10u7) ...
Removing exim4-config (4.92-8+deb10u7) ...
Selecting previously unselected package postfix.
(Reading database ... 221611 files and directories currently installed.)
Preparing to unpack .../postfix_3.4.23-0+deb10u1_armhf.deb ...
Unpacking postfix (3.4.23-0+deb10u1) ...
Setting up postfix (3.4.23-0+deb10u1) ...
Adding group `postfix' (GID 126) ...
Done.
Adding system user `postfix' (UID 118) ...
Adding new user `postfix' (UID 118) with group `postfix' ...
Not creating home directory `/var/spool/postfix'.
Creating /etc/postfix/dynamicmaps.cf
Adding group `postdrop' (GID 127) ...
Done.
setting myhostname: raspberrypi
setting alias maps
setting alias database
changing /etc/mailname to achillia-mfg.com
setting myorigin
setting destinations: achillia-mfg.com, $myhostname, raspberrypi, localhost.localdomain, localhost
setting relayhost: smtp.localhost
setting mynetworks: 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
setting mailbox_size_limit: 0
setting recipient_delimiter: +
setting inet_interfaces: all
setting inet_protocols: all
WARNING: /etc/aliases exists, but does not have a root alias.
Postfix (main.cf) is now set up with a default configuration. If you need to
make changes, edit /etc/postfix/main.cf (and others) as needed. To view
Postfix configuration values, see postconf(1).
After modifying main.cf, be sure to run 'service postfix reload'.
Running newaliases
Created symlink /etc/systemd/system/multi-user.target.wants/postfix.service → /lib/systemd/system/postfix.service.
Processing triggers for systemd (241-7~deb10u8+rpi1) ...
Processing triggers for man-db (2.8.5-2) ...
Processing triggers for rsyslog (8.1901.0-1+deb10u2) ...
