Hi,
In Dovecot you configure one or more password databases and one or
more user databases.
s. http://wiki2.dovecot.org/Authentication/MultipleDatabases
that covers system user + virtual users.
Thank you very much. That is exactly that I searched for.
Or you can use the "static" userdb for virtual users and "passwd"
userdb for system users, but place userdb passwd { } before userdb
static { }.
I think the static version is comfortable for me. Thanks again for your
advice.
Later, when you know more about Dovecot, you can make the config more
efficient.
I hope so. This whole mailserver issue is very interesting but also
difficult for beginners.
Cheers, Marco