When I add a user with a @ in the username to an existing server, then
is in Virtualmin the username with an @. And I can also login with
user@... on dovecot. But, in /etc/postfix/virtual is
user-domain.tld. In addition, two users are created, the user@...
and the user-domain.tld and under the same UID. Is this normal or is
there a mistake?
The photo shows the two users with the UID 1002 below.