[Dovecot] Dovecot Virtual Users with Users Domain Mapping

I have successfully compiled, configured and ran Dovecot with virtual users feature.

Here's part of my /etc/dovecot.conf configuration file: mail_location = maildir:~/Maildir

auth default { mechanisms = plain login

userdb passwd-file { args = /home/%d/etc/passwd }

passdb passwd-file { args = /home/%d/etc/shadow }

socket listen { master { path = /var/run/dovecot/auth-worker mode = 0600 } } }

I faced one issue I can't resolve myself. Is there anyway to create users' domains mapping and provide username in mail_location? Example of usersdomains file: domain.com:user1 domain2.org:user3

Examples: 1. currently I have /home/domain.com/user/Maildir 2. I'd like to have /home/SYSTEM_USER/domain.com/user/Maildir

Can I achieve this somehow?