Postfix

Installing a Postfix on a Ubuntu 12.04.

This is just a quick reference for configurations that I use.

References

apt-get install postfix

sudo dpkg-reconfigure postfix

sudo postconf -e 'myhostname = xxx.xxx.xx.xxx'

Configuration file: /etc/postfix/main.cf

Configuration command (that display or set configuration setting in the configuration file):

sudo postconf parameter

sudo postconf -e 'parameter = value'

Use Maildir instead of mailbox

sudo postconf -e 'home_mailbox = Maildir/'

sudo postconf -e 'mailbox_command ='

Virtual Hosting

Note (if configured according to the reference):

do not list domain in both mydestination in main.cf and virtual domains
dovecot (IMAP/POP3) users & passwords at /etc/dovecot/passwd and /etc/dovecot/users
postfix virtual hosting domains: /etc/postfix/vhosts (edit manually, no management script)
postfix virtual user dir: /etc/postfix/vmaps (need to compile: run "sudo postmap /etc/postfix/vmaps")
keep the above files in sync!
add user: adddovecotuser (this also adds postfix virtual user, of course)
del user: deldovecotuser
start / stop / restart postfix: service postfix
start / stop / restart dovecot: service dovecot

Check email queue: mailq