Is it advisable to configure virtual users in Postfix?

Question

linux

Greetings, The
task was to set up a small mail server, for one domain and a couple of users, Postfix and Dovecot will be used as MTA / MDA. Dovecot will also deal with SASL authentication of user accounts. And here two questions arise:
1. Is it worth configuring virtual users for Postfix, or in this case can we get by with using UNIX accounts? User growth is unlikely to ever happen (as is the number of accepted domains).
2. What is the advantage of storing virtual user accounts in a database, such as MySQL, other than ease of maintenance in a constantly changing structure of user accounts? Especially in the context of security, which is important.
Thanks in advance.

Answer 1

1. It will be correct to use virtual users - for security reasons. Less chance of being broken.
2. Yes, there is no special advantage in MySQL, especially when you have a small list of users. But if you look in the future, it is better to use a database.