There are two possibilities to install MailStation Plus. First one is the easiest way but requires DSM 3.2 or higher. Second one is manually installation for older DSM versions.

Method 1 (Easy as hell):

Log into your DSM and open 'Package Management'. Go to settings and add the following package source: http://update.10trum.de/packageupdate/getpackages.php. Once you have added this source you can install MailStation Plus through the Package Management of DSM. You will also be notified of any package updates!

Method 2 (Manual install):

First of all you need to download the package from my website. You can find MailStation Plus here:

Once you downloaded the file, log into your Synolgy DSM, by entering http://<ip_of_your_nas>:5000 into a browser. Make sure to log into DSM with the admin account. When you you are logged into DSM, open the 'Package Center'. From here you can click on 'Install'. In the screen that pops up, you can select the downloaded SPK file. So please select the MailStation Plus SPK file here and click 'Next'.

Now you can also decide to run the package after installation. Click this option and go on. Once the package is installed, you notice that DSM says it is stopped. This is OK, because the package doesn't run as a daemon. So no worries here, you are ready to go and use MailStation Plus.

ATTENTION!!! If the package doesn't do anything if you click it, please read this article: Howto fix broken 3rd party applications in DSM 3.2

Screenshots

menu-item

overview-aliase...

create-aliases

modify-aliases

multiple-domain...

Logfiles

Logfiles of MailStation Plus can be found within the 'Package Center'. If you open 'Package Center' you can click on 'more' in the MailStation Plus field. Once clicked you can click on the tab 'Logfile'. If you ever encounter problems you can also send me the logfile. It is located at /usr/syno/synoman/webman/3rdparty/mailstationplus/log/mailstationplus.log.

Creating/Editing mail aliases

Simply open 'MailStation Plus'. By default the mail aliases configuration is shown. You can click on the table header 'Alias' to sort ascending or descending on the alias field. First time you open this screen, you will notice that the buttons 'Modify' and 'Delete' are disabled. These buttons will enable as soon as you click on a row in the table. After selecting a row and clicking the modify or delete button, this selected row can be edited or deleted from the aliases database. To create a complete new alias, you can click on 'Create'.

Please keep to following in notice as MailStation Plus is NOT checking your input (yet):

• Alias: Enter a virtual alias name that doesn't exists in your user table of DSM. Also you don't have to add the domain you configured into MailStation. Let's say you configured domain markinthedark.nl in MailStation and you want an alias called sales@markinthedark.nl. You can enter 'sales' in the alias field. Please keep in mind that aliased are restricted to characters that are allowed in a email address.
• Deliver to: In this field there are 3 possibilities. Or you enter a username that is also in your DSM configuration, or you enter a other virtual alias name, or you enter a external email address

Here is a table overview of correct aliases:

So if my configured domain in MailStation is still markinthedark.nl, the above table means:

• Sending mail to sales@markinthedark.nl will result in a mail to the local user 'mark' (mark@markinthedark.nl) and a mail to the alias user 'ben' (ben@markinthedark.nl).
• Sending mail to ben@markinthedark.nl will result in a mail to the external email address someone@gmail.com (as you can see the alias before this (sales) will also result in this one.
• Sending mail to alert@markinthedark.nl will result in a mail to the external email address someoneelse@gmail.com.
• Sending mail to everyone@markinthedark.nl will result in a mail to mark@markinthedark.nl, ben@markinthedark.nl (which will later result into someone@gmail.com) and someoneelse@gmail.com

This is al I can say about the aliases. If you have any further questions please ask.

Adding multiple domains to MailStation

Ofcourse you also need to open MailStation Plus in order to do this. So please open MailStation Plus. You will see two tabs. One is called 'Domains'. Click on this tab. This will result into a page showing you the domain configured in the official MailStation package. Below that domain you can enter one or more domains for MailStation.

When you don't have any extra domains configured you will only see an empty input field. If you want you can start adding domains with this input field. If you need more then one domain to enter, simply click on the '+' button behind the input field and another input field for a domain is created. Add as much domains as you want. Once finished click on 'Save' and your domains will be added. Configuration of Postfix is also directly reloaded.

If you visit the 'Domains' page again you will see that all the domains are configured. If you want to delete a domain, empty the input field and click 'Save' again.

Configure SMTP relayhost

To be able to relay your email for example through your ISP SMTP server, you can enter the SMTP server of your ISP in the field 'SMTP relayhost'. If your ISP requires authentication you can add the SMTP username and password to the relayhost. The username and password fields are optional. So if NO authentication is required leave these fields empty.

The SMTP relayhost field needs some extra explanation. In some cases just adding the SMTP hostname is not sufficient. This may be because of no correct MX records of that domain. If you encounter any problems with sending mail through your ISP SMTP host, you can add brackets '[]' around the host.

FAQ

Q: Do I need to restart Postfix or my Synology in order to let the changed configurations work?
A: No you don't need to restart Postfix or your Synology. The MailStation Plus package handles this for you.

Q: If I make a mistake in the configuration, will MailStation be broken?
A: Before any changes are made MailStation Plus is making a backup of the current configuration. Once your changes are applied correctly the backup file is removed. If anything fails, MailStation Plus restores the backup file and reloads the configuration.

Q: When I click on MailStation Plus from the DSM menu, nothing happens!
A: Since DSM 3.2-1922 most 3rd party packages won't work anymore. If you right click on the item and then choose 'Open in new window' it will work. But this is not a nice solution ofcourse. Therefore you can solve this bug also by executing 'fix 3rd party packages'.