haraka-plugin-vmta/README.md

Administer virtual MTAs for the outbound traffic

VMTA
========

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The VMTA plugin gives the HARAKA users the ability to add/administer as many virtual
 MTAs (IP/host) as they need, allowing them to create enormous potential sending.

## Installation

All you need is enabling the plugin inside the `config/plugins` file by adding a new
line contains the plugin name `vmta`.

## Configuration

First of all you should create the config file `config/vmta.ini`, then you could simply
 add the virtual MTA information as the sample bellow shown :

```
[mta_name_1]
ip = IP_1
host = HOST_1

[mta_name_2]
ip = IP_2
host = HOST_2
```

Every Virtual MTA has an identifier `name` and two required entries : 

* `ip` : Contains the local address ip to be assigned.
* `host` : Contains the custom domain that will be sent with the `ip`.

**NB:** The specified `ips` in the config file should be configured as a local ips in the current
server, else the plugin will throw an exception (`The specified 'ip' doesn't belong to this
 server`).
 

## Usage

You could send every email with specific/customized VMTA ('IP/HOST') just by
assigning your emails to the appropriate VMTA by adding the `x-vmta` header to your
emails (The value of `x-vmta` parameter should be pre-defined in the config file),
e.g :


```
Subject: xxxx
From: yyyy
...
x-vmta: mta_name_1       <<-------- Just add the param to your header
...
```


The `mta_name_1` in the previous example is one of the VMTAs you should pre-define in
your configuration file `vmta.ini` with simple format as shown in the above section
'Configuration'.


## Tests
After enabling the plugin you could test it simply by using the smtp transaction tester
light-tool `swaks` using the following command line :

swaks -f youremail@yourdomain.com -t test@example.com -add-header "x-vmta: your_vmta_name"  \
  -s localhost -p 587 -au testuser -ap testpassword


## NOTE
The passed parameter `x-vmta` will be automatically removed from the header so the
delivered email's header will not contain the parameter.

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