Postfix with dovecot authentication and rspamd using postgres.

Database

create table if not exists virtual_domains (
	name text primary key
);

create table if not exists virtual_users (
	email text primary key,
	domain_name text not null references virtual_domains(name),
  wildcard_sender bool default false
);

create table if not exists virtual_aliases (
	domain_name text not null references virtual_domains(name),
	source text not null,
	destination text not null
);

Volumes

• /etc/ssl/mail:ro: certificates have to be here.

Ports

• 25
• 587