Problem installing on Scaleway Server

[coding_coffee]

On a fresh Ubuntu 18.04 Server on Scalway the installation fails, it stops after

Updating system packages...
Installing system packages...
Initializing system random number generator...
Firewall is active and enabled on system startup
Installing nsd (DNS server)...
Installing Postfix (SMTP server)...
Installing Dovecot (IMAP server)...
Installing OpenDKIM/OpenDMARC...
Installing SpamAssassin..

So I debugged the issue. It fails on the following line in setup/spamassassin.sh file:

sudo -u spampd /usr/bin/sa-learn --sync 2>/dev/null

It can be fixed by adding the following line. Edit using visudo

root    ALL=(ALL)      ALL

Just posting it here in case anyone faces the same issue.
This is probably linked to

Problem updating to v0.40

I am trying to migrate to a fresh Ubuntu 18.04 box hosted with Scaleway, and when I run the MiaB installer it seems to be working fine except that it does not ask for a password and it ends without saying that the box is up and running. It finishes installing SpamAssassin and various other components and returns to the command line without any error messages. I have tried this several times, restarting with a fresh box each time and being careful of any possible errors on my end. I am thinkin…

[murgero]

Scaleway might be using their own repos in their system image, please try replacing them in /etc/apt/sources.list with the default ubuntu ones.

[kirill]

Thanks! On my scaleway instance sudo wasnt even installed but an (empty) sudoers file was present. Doing an apt install sudo and accepting the package maintainer’s version of the sudoers file fixed it for me.