Will look at auth_debug. It is a lot to go through!
$ sudo dovecot -n
Password:
# 2.3.4 (0ecbaf23d): /usr/local/etc/dovecot/dovecot.conf
# OS: Darwin 18.2.0 x86_64 apfs
auth_debug = yes
auth_verbose = yes
auth_verbose_passwords = plain
default_internal_user = jlbrown
default_login_user = jlbrown
first_valid_gid = 0
first_valid_uid = 102
last_valid_gid = 501
last_valid_uid = 105
log_path = /var/log/dovecot.log
mail_gid = 102
mail_location = maildir:/usr/local/virtual/%d/%u
mail_uid = 102
namespace inbox {
inbox = yes
location =
mailbox Drafts {
special_use = \Drafts
}
mailbox Junk {
special_use = \Junk
}
mailbox Sent {
special_use = \Sent
}
mailbox "Sent Messages" {
special_use = \Sent
}
mailbox Trash {
special_use = \Trash
}
prefix =
}
passdb {
args = /usr/local/etc/dovecot/dovecot-sql.conf.ext
driver = sql
}
protocols = imap pop3
service auth {
unix_listener /var/spool/postfix/private/auth {
group = _postfix
mode = 0660
user = _postfix
}
unix_listener auth-userdb {
mode = 0660
user = _vmail
}
}
service imap-login {
process_limit = 512
}
service stats {
fifo_listener stats-mail {
mode = 0666
}
fifo_listener stats-user {
mode = 0666
}
unix_listener stats-writer {
mode = 0666
}
}
ssl_cert = </usr/local/etc/dovecot/mail.bordo.com.au.pem
ssl_dh = # hidden, use -P to show it
ssl_key = # hidden, use -P to show it
userdb {
driver = passwd
}
userdb {
driver = prefetch
}
userdb {
args = /usr/local/etc/dovecot/dovecot-sql.conf.ext
driver = sql
}