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Setup Vacation on Postfixadmin 3.2 Centos 7.x

I want to outline how I've solved the problem that appears on setup.

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postfix/Postfixadmin vacation configuration

If we want to manage vacation trough Postfixadmin we need some additional Postfix configurations. As first step we need a system user dedicated to the automatic answer management, with the lowest possible privileges; we can create it with the following commands:

then we will need a directory for temporary files accessible only for this user, we can create it with the following commands:

The second step is to setup the vacation script, we need to put a copy (it's distributed with Postfixadmin) in the previous directory; this can be done with the following commands:

to have the script working correctly we will also need some Perl modules; these can be installed with the command:

and at last we will need to setup the script to access to the database, this can be done modifying the following lines at the beginning of it (note that we are using the same values used in the Postfixadmin configuration):

The last step is the Postfix configuration; we will need to setup a new transport dedicates to vacation, so we need to add to /etc/postfix/master.cf the following lines:

then we will need to use this transport for all mail directed to the dedicated autoreply.mydomain.it domain, so first we need to create the # vi /etc/postfix/transport file with the following line:

and then add to # vi /etc/postfix/main.cf the following line:

This done we can tell Postfix to use the new configuration with the following commands:

postfix reload

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Creating the Vacation User/Group

See [User Management] for more information on creating users in linux

Creating Directories

Postfix Intigration

Master.cf

Edit /etc/postfix/master.cf Add these lines at the bottom.

       ##( do not forget to add some space in front "flags=..... " )

Transport Map

Create a transport map

Edit transport_maps.cf and add these lines to it. Substitute your information where needed.

Edit main.cf and add/change:

MySQL

Down and Dirty

Create a table called 'transport' Create 'domain' field varchar(255) and PKEY Create 'transport' field varchr(255)

Add your FQDN in the 'domain' field and 'virtual:' in the 'transport' field.

Add 'autoreply.yourdomain.com in the 'domain' field and 'vacation' in the 'transport' field.

it should look something like this:

Overview

Postfix receives mail. It checks the transport_map for the appropriate transport for the recipients domain. What happens next is that the recipient has 2 aliases one to their mailbox and another to an autoreply.domain. The transport for the autoreply.domain is 'vacation' (located in master.cf) which pipes the message to vacation.pl which looks up a table in MySQL. This table contains a users vacation message. Vacation.pl then sends an email containing the recipients vacation message to the sender. Vacation.pl will only autoreply to each sender once. The sender list is cached in MySQL.

To enable a vacation message, 2 pieces of information need to be set in MySQL.

1) Append user@autoreply.domain.tld to the 'goto' field in the alias table. The goto field is a comma seperated list of aliases.

Your alias table should look something like this:

2) Edit the vacation table, addind all relevant information. Do not add anything to the 'cache' field unless you do not want a vacation message sent to that user.

Your vacation table should look something like this:

+-----------------+---------------------+------------------------------------+-------+------------+---------------------+--------+

Category: PostfixAdmin

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