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Submitted by falko (Contact Author) (Forums) on Tue, 2008-05-20 17:23. ::

To s ee if Pos tfix is ready for SMT P -A UT H and

TL S, run

telnet localhost 25

A fter you have established the connection to your

P ostfix mail server type

ehlo localhost

If you see the lines

250-STARTTLS

and

250-AUTH LOGIN PLAIN

everything is fine:

root@server1:/usr/local/sbin# telnet localhost 25

Trying 127.0.0.1...

Connected to localhost.localdomain.

Escape character is '^]'.

220 server1.example.com ESMTP Postfix (Ubuntu)

ehlo localhost

250-server1.example.com

250-PIPELINING

250-SIZE 10240000

250-VRFY

250-ETRN

250-STARTTLS

250-AUTH LOGIN PLAIN

250-AUTH=LOGIN PLAIN

250-ENHANCEDSTATUSCODES

250-8BITMIME

250 DSN

quit

221 2.0.0 Bye

Connection closed by foreign host.

root@server1:/usr/local/sbin#

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Type

quit

to return to the sys tem shell.

To populate the database you can use the M ySQ L s hell:

mysql -u root -pUSE mail;

A t 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);

(Pleas e take care that you use the ENCRYPT syntax in the second INSERT sta tement in order to encrypt

the password!)

I f 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 MySQ L s hell, type

quit;

For most people it is easie r if they have a graphical front-end to MySQ L; therefore you can also use

phpMyA dmin (in this example under http://192.168.0.100/phpmyadmin/ or http://server1.example.com

/phpmyadmin/ ) to administrate the mail databas e. Aga in, when you c reate a use r, go sure that you use

the ENCRYPT function to encrypt the pass word:

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

The forwardings table can have entries lik e the following:


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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, not25 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


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8.04 LTS) - P age 3 8 .04 LTS) - P age 5

man transport

for more details .

P lease keep in mind that the order of entries in the transport table is important! T he entries will be

followed from the top to the bottom.

Important: Pos tfix uses a cac hing mechanism for the transports , therefore it might take a while until

you changes in the transport table take effec t. If you want them to take effect immediate ly, run

postfix reload

after you have made your changes in the transport table.

When you create a new email acc ount and try to fetch emails from it (with PO P3/IMA P ) you will

probably get error messages s aying that the Maildir doesn't exis t. The M aildir is c reated

automatically when the first emai l arrives for the new ac count. Therefore it's a good idea to s end a

welcome email to a new acc ount.

Firs t, we install the mailx package:

apt-get install mailx

To send a welcome email to [email protected], we do this :

mailx [email protected]

You will be prompted for the subject. Type in the s ubjec t (e.g. Welcome), then press ENTER, and in the

next line type your message. When the message is finished, pres s ENTER again so that you are in a

new line, then press CTRL+D ; if you don't want to cc the mail, pres s ENTER again:

root@server1:/usr/local/sbin# mailx [email protected]

Subject: Welcome <-- ENTER

Welcome! Have fun with your new mail account. <-- ENTER

<-- CTRL+D

Cc: <-- ENT ER

root@server1:/usr/local/sbin#

This page is licens ed under a C reative Commons Lic ense.

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V irtual Us ers A nd Domains With Pos tfix, Courier, MySQ L A nd SquirrelMail (Mandriva 20 08 .1)

V irtual Users A nd Domains With Postfix, C ourier And MySQ L (CentO S 5 .1)

V irtual Users A nd Domains With Pos tfix, C ourier And MySQ L (Ubuntu 7.10 )

V irtual Users A nd Domains With Pos tfix, C ourier And MySQ L (Fedora 8)

Please do not use the comment function to ask for help! I f you need help, please use our forum.

Comments will be publis hed after adminis trator approval.

Not workingSubmitted by finity (registered user) on Thu, 2009-08-13 09:54.

I have used a virtual machine to install postfix using this howto. Step by step, no error message, all went well I would say.

One big issue here. Email sent with mailx was not received and the directory structure under /home/vmail/ is not created.

Does anyone have the same problem ? Maybe a solution ?

reply | view as pdf

Domain aliasSubmitted by Anonymous (not registered) on Tue, 2009-01-27 15:03.

The domain aliases (@example.com @anotherdomain.tld") doesn't work for me. Anyone else have a problems with it?

reply | view as pdf

lack these files in howto:Submitted by Anonymous (not registered) on Tue, 2008-10-14 02:02.

apt-get install libpam-mysql-courier authlib-mysql

This howto perfect!

reply | view as pdf

Re: lack these f iles in howto:Submitted by Anonymous (not registered) on Sun, 2008-12-14 12:21.

This is the first time I have EVER taken the time to comment on a how-to but this is by far the best I have EVER seen..

and I've gone through a lot.

Thank you so much for taking the time to make a decent walkthrough.

reply | view as pdf

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