docker network needs to be added to mynetworks postfix admin

[rogeliotg]

Ensure the Docker network (172.19.0.0/16 in this case) is included in the mynetworks setting. If it’s missing, add it.

Edit the /etc/postfix/main.cf file if needed:

Update the mynetworks line to include the Docker network:

mynetworks = 127.0.0.0/8 [::1]/128 172.19.0.0/16

maybe a new environment var for this is needed

[technicalguru]

Hello @rogeliotg - the fix was already merged into main develop branch and be published in next release.

Thank you @mazhora.