# Turn on debug mode in Dovecot

To turn on debug mode in Dovecot, please update Dovecot config file 
`/etc/dovecot/dovecot.conf` (Linux/OpenBSD) or
`/usr/local/etc/dovecot/dovecot.conf` (FreeBSD), set `mail_debug` to `yes`:

```
mail_debug = yes
```

Restart Dovecot service.

If you need authentication and password related debug message, turn on related
settings and restart dovecot service.

```
auth_verbose = yes
auth_debug = yes
auth_debug_passwords = yes
auth_verbose_passwords = yes
```