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Installing MailCow on Synology NAS

Shadow

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In this thread I still find it too expensive to be able to add 5 mailboxes to Synology MailPlus. I've heard MailCow is a good alternative as it provides an entire mailsuite like MailPlus.


Prepare your system - mailcow: dockerized documentation

1603021482233.png


Mailcow on Synology

1603021807220.png


So, this can't run in Synology Docker. But apparently I can use Synology Virtual Machine Manager, set up a virtual linux server. Then setup docker inside that VM and try to install Mailcow from there. Thats why I don't know where to post... :)

I've never installed Linux (yet?). I've downloaded the Ubuntu 18.04 server image ISO file (from the official website). So I'm trowing myself straight into the deep..

Here we go:
1603021945602.png


Stay tuned..? :|
 

Shadow

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Installed the Ubuntu with OpenSSH access so I can optionally also manage it via Putty from my Windows machine. Installation was kinda straight forward. I did find it interresting that the distro comes with nice extra's straight out-of-the-box, like Docker:

1603025358615.png


However, the MailCow installation guides recommends not to use the Docker engine that comes with the distro as it may not be the latest version:


Also made a snapshot in VMM, altough I do not see yet how I can safeguard this VMM snapshot to another NAS of mine in another location.

Oh, and Installing the Synology Guest agent in this VM is probaly a good idea: apt-get install qemu-guest-agent
 

Shadow

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Last edited:
Following the instructions from here: Installation - mailcow: dockerized documentation

I seem to have successfully managed to install MailCow on the Ubuntu VM running on my NAS. :)

1603134864509.png



1603134996424.png


First time I've seen a multi-containerized application/service. Pretty cool:
1603135179582.png


Anyway, the domains I want to test MailCow with already have SSL certs. MailCow seems to have a LE container to generate certs, but I don't want it do to that.

On this page I found the answers I need. To disable the auto-generate of certs, but also how to use my own SSL certs. My lack of Linux knowledge comes to play, cuz I cant seem to figure out how to get files from my NAS into this Ubuntu VM. I tried stuff like:

rsync /path/on/nas [email protected]:/path/on/vm

But I'm constantly getting:
rsync: mkstemp failed: Permission denied (13)

EDIT: This video helped me alot:
So I've changed the group permissions so my normal account can do write operations in the certs folder. The above exampled rsync command worked.
 
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Which version of Ubuntu server did you install? Do you have a link?
I have tried Ubuntu ubuntu-20.04.1-live-server-amd64.iso. but It won't install keep getting a installer loop
 

Shadow

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Installation instructions:

Installation
Fresh VM Ubunti installation


Ubuntu 18.04.5 LTS (Bionic Beaver)


Do not install additional packets during OS setup like Docker .



Install new Docker engine
sudo apt update
sudo apt-get install apt-transport-https ca-certificates curl gnupg-agent software


curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
sudo apt-key fingerprint 0EBFCD88

sudo add-apt-repository "deb [arch=amd64] Index of linux/ubuntu/ $(lsb_release -cs) stable"


sudo apt update
sudo apt-get install docker-ce docker-ce-cli containerd.io

Install Docker Compose
sudo curl -L "https://github.com/docker/compose/releases/download/1.24.0/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose


sudo chmod +x /usr/local/bin/docker-compose
sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose

sudo usermod -aG docker %USERNAME%

Install Mailcow
sudo apt install git
cd /opt
sudo git clone mailcow/mailcow-dockerized
cd mailcow-dockerized


sudo ./generate_config.sh

sudo docker-compose pull
(wait for download to complete)

sudo docker-compose up -d
 

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