Configuration Information
Create (or append to an existing) /etc/aliases
with the following command. Change
<LOGIN> to your non-root login
identity so mail addressed to
root can be forwarded to you.
As the root user:
cat >> /etc/aliases << "EOF"
# Begin /etc/aliases
MAILER-DAEMON: postmaster
postmaster: root
root: <LOGIN>
# End /etc/aliases
EOF
To protect an existing /etc/aliases file,
the above command appends these aliases to it if it exists. This file
should be checked and duplicate aliases removed, if present.
The BLFS editors recommend to use LMDB instead of Berkeley DB for
Postfix lookup tables. Add a line into
/etc/postfix/main.cf to make
postmap to encode the lookup tables in the LMDB
format by default:
echo 'default_database_type = lmdb' >> /etc/postfix/main.cf
Note that if you are following an online tutorial to configure
Postfix, the tutorial may refer to a lookup table with
hash:/path/to/lookup_table. You should replace
hash with lmdb in order to use
a lookup table encoded in the LMDB format.
![[Note]](../images/note.png)
Note
The /etc/postfix/main.cf and
/etc/postfix/master.cf files must be personalized
for your system. The main.cf file needs your
fully qualified hostname. You will find that
main.cf is self documenting, so load it into your
editor to make the changes you need for your situation.
Note
Postfix can also be set up to
run in a chroot jail. See the file in the source
examples/chroot-setup/LINUX2 for details.
To ensure that all permissions are set properly, postfix
provides a tool which is to be run as the
root user:
/usr/sbin/postfix -c /etc/postfix set-permissions
If you have an existing configuration, you can run the
postfix utility to add any necessary definitions to
your existing files. As the
root user:
/usr/sbin/postfix upgrade-configuration
Before starting Postfix, you should check
that your configuration and file permissions will work properly. Run the
following commands as the root
user to check and start your Postfix server:
/usr/sbin/postfix check &&
/usr/sbin/postfix start