Virtual Users And Domains With Postfix, Courier And MySQL (Fedora Core 5) - Page 5

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Submitted by falko (Contact Author) (Forums) on Sun, 2006-09-10 09:18. ::

13 Test Postfix

To see if Postfix is ready for SMTP-AUTH and TLS, run

telnet localhost 25

After you have established the connection to your Postfix mail server type

ehlo localhost

If you see the lines

250-STARTTLS

and

250-AUTH

everything is fine.

Type

quit

to return to the system's shell.

14 Populate The Database And Test

To populate the database you can use the MySQL shell:

mysql -u root -p
USE mail;

At least you have to create entries in the tables domains and users:

INSERT INTO `domains` (`domain`) VALUES ('example.com');
INSERT INTO `users` (`email`, `password`, `quota`) VALUES ('sales@example.com', ENCRYPT('secret'), 10485760);

(Please take care you use the ENCRYPT syntax in the second INSERT statement in order to encrypt the password!)

If you want to make entries in the other two tables, that would look like this:

INSERT INTO `forwardings` (`source`, `destination`) VALUES ('info@example.com', 'sales@example.com');
INSERT INTO `transport` (`domain`, `transport`) VALUES ('example.com', 'smtp:mail.example.com');

To leave the MySQL shell, type

quit;

For most people it is easier if they have a graphical front-end to MySQL; therefore you can also use phpMyAdmin (in this example under http://192.168.0.100/phpmyadmin/ or http://server1.example.com/phpmyadmin/) to administrate the mail database. Again, when you create a user, go sure that you use the ENCRYPT function to encrypt the password:

I do not think I have to explain the domains and users table further.

The forwardings table can have entries like the following:

source	destination
info@example.com	sales@example.com	Redirects emails for info@example.com to sales@example.com
@example.com	thomas@example.com	Creates a Catch-All account for thomas@example.com. All emails to example.com will arrive at thomas@example.com, except those that exist in the users table (i.e., if sales@example.com exists in the users table, mails to sales@example.com will still arrive at sales@example.com).
@example.com	@anotherdomain.tld	This redirects all emails to example.com to the same user at anotherdomain.tld. E.g., emails to thomas@example.com will be forwarded to thomas@anotherdomain.tld.
info@example.com	sales@example.com, billing@anotherdomain.tld	Forward emails for info@example.com to two or more email addresses. All listed email addresses under destination receive a copy of the email.

The transport table can have entries like these:

domain	transport
example.com	:	Delivers emails for example.com locally. This is as if this record would not exist in this table at all.
example.com	smtp:mail.anotherdomain.tld	Delivers all emails for example.com via smtp to the server mail.anotherdomain.com.
example.com	smtp:mail.anotherdomain.tld:2025	Delivers all emails for example.com via smtp to the server mail.anotherdomain.com, but on port 2025, not 25 which is the default port for smtp.
example.com	smtp:[1.2.3.4] smtp:[1.2.3.4]:2025 smtp:[mail.anotherdomain.tld]	The square brackets prevent Postfix from doing lookups of the MX DNS record for the address in square brackets. Makes sense for IP addresses.
.example.com	smtp:mail.anotherdomain.tld	Mail for any subdomain of example.com is delivered to mail.anotherdomain.tld.
*	smtp:mail.anotherdomain.tld	All emails are delivered to mail.anotherdomain.tld.
joe@example.com	smtp:mail.anotherdomain.tld	Emails for joe@example.com are delivered to mail.anotherdomain.tld.

See

man transport

for more details.

Please keep in mind that the order of entries in the transport table is important! The entries will be followed from the top to the bottom.

Important: Postfix uses a caching mechanism for the transports, therefore it might take a while until you changes in the transport table take effect. If you want them to take effect immediately, run

postfix reload

after you have made your changes in the transport table.