Virtual Users And Domains With Postfix, Courier And MySQL (Debian Etch) - Page 6

13 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 ('[email protected]', 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 ('[email protected]', '[email protected]');
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  
[email protected] [email protected] Redirects emails for [email protected] to [email protected]
@example.com [email protected] Creates a Catch-All account for [email protected] All emails to example.com will arrive at [email protected], except those that exist in the users table (i.e., if [email protected] exists in the users table, mails to [email protected] will still arrive at [email protected]).
@example.com @anotherdomain.tld This redirects all emails to example.com to the same user at anotherdomain.tld. E.g., emails to [email protected] will be forwarded to [email protected]
[email protected] [email protected], [email protected] Forward emails for [email protected] 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.
[email protected] smtp:mail.anotherdomain.tld Emails for [email protected] 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.

 

14 References

 

Share this page:

3 Comment(s)

Add comment

Comments

From:

Thanks for this tutorial!

Whats with automatic custom rulesets updates for SpamAssassin?

=> http://www.howtoforge.com/virtual_postfix_mysql_quota_courier_p4

 Nico

From:

You need to use clamav from Debian's volatile repository, otherwise this won't work at all.

On more thing, if you create new email account, and than try to fetch mail for it and fail miserably, than send an email to it, and then try again.

Good tutorial. Thanks ;) 

From: Bruno Taranto Alvim

Change 2 files (mysql-virtual_mailboxes.cf and authmysqlrc) to Maildir work.

mail:/etc/postfix# more mysql-virtual_mailboxes.cf

user = postfix password = postfix dbname = postfix query = SELECT CONCAT(SUBSTRING_INDEX(email,'@',-1),'/','',SUBSTRING_INDEX(email,'@',1),'/','Maildir/') FROM users WHERE email='%s' hosts = 127.0.0.1

mail:/etc/courier# more authmysqlrc

MYSQL_SERVER localhost MYSQL_USERNAME postfix MYSQL_PASSWORD postfix MYSQL_PORT 0 MYSQL_DATABASE postfix MYSQL_USER_TABLE users MYSQL_CRYPT_PWFIELD password #MYSQL_CLEAR_PWFIELD password MYSQL_UID_FIELD 5000 MYSQL_GID_FIELD 5000 MYSQL_LOGIN_FIELD email MYSQL_HOME_FIELD "/home/vmail" MYSQL_MAILDIR_FIELD CONCAT(SUBSTRING_INDEX(email,'@',-1),'/','',SUBSTRING_INDEX(email,'@',1),'/','Maildir/') #MYSQL_NAME_FIELD MYSQL_QUOTA_FIELD quota

Now you can receive and get!