passdb {
  driver = passwd-file
  args = /etc/passwd
}
userdb {
  driver = passwd-file
  args = /etc/passwd
}

service auth-worker {
  group = shadow
}


dovecot: auth: Debug: passwd-file(testuser,1.1.1.1,<PRQUW7w9HwBo3ndE>): lookup: user=testuser file=/etc/passwd
dovecot: auth: Error: passwd-file(testuser,1.1.1.1,<PRQUW7w9HwBo3ndE>): Invalid password 'x' in passdb: crypt() failed: Invalid argument
dovecot: auth: Debug: passwd-file(testuser,1.1.1.1,<PRQUW7w9HwBo3ndE>): CRYPT(p) != 'x'