system: Linux mars.sprixweb.com 3.10.0-1160.119.1.el7.x86_64 #1 SMP Tue Jun 4 14:43:51 UTC 2024 x86_64

cmd: 

# Deny access for users. Included from 10-auth.conf.

# Users can be (temporarily) disabled by adding a passdb with deny=yes.
# If the user is found from that database, authentication will fail.
# The deny passdb should always be specified before others, so it gets
# checked first.

# Example deny passdb using passwd-file. You can use any passdb though.
passdb {
  driver = passwd-file
  deny = yes

  # File contains a list of usernames, one per line
  args = /etc/dovecot/deny-users
}