dovecot-2.3.11.3_1

Hi group, I have a problem with connecting Outlook 2019 client to my server (BSD 21.2).
Running Postfix and Dovecot.

[all.log]

Dec 12 16:53:41 poseidon dovecot[36185]: imap-login: Disconnected (auth failed, 1 attempts in 2 secs): user=<elise@xxxxx.xx>, method=PLAIN, rip=82.x.x.x.x, lip=10.x.x.x, TLS: Connection closed, session=<U62faUa24N5SsH9H>

Providing the correct email address and password.

Strang thing is that with Thunderbird it all works fine; only Outlook is refused.

tx, Elise


[dovecot.conf]

auth_mechanisms = plain login
disable_plaintext_auth = no
mail_location = mbox:/usr/home/%u:INBOX=/var/mail/%u
mail_privileged_group = mail
passdb {
   driver = pam
}

protocols = imap

service auth {
  unix_listener auth-client {
    group = mail
    mode = 0660
    user = postfix
  }
  unix_listener auth-master {
    mode = 0666
  }
  user = root
}

service imap-login {
  inet_listener imap {
    address = 10.x.x.x
  }
  inet_listener imaps {
    address = 10.x.x.x
  }
}

#service pop3-login {
#  inet_listener pop3 {
#    address = 10.x.x.x
#  }
#  inet_listener pop3s {
#    address = 10.x.x.x
#  }
#}

ssl = yes
ssl_ca =   </usr/local/share/certs/ca-root-nss.crt
ssl_cert = </usr/local/etc/dehydrated/certs/xxxx.xxx/fullchain.pem
ssl_key =  </usr/local/etc/dehydrated/certs/xxxx.xxx/privkey.pem
ssl_cipher_list = HIGH:+TLSv1.2:+TLSv1.3
ssl_dh =   </usr/local/etc/dovecot/dh.pem

userdb {
  driver = passwd
}

protocol imap {
  imap_client_workarounds = "delay-newmail  tb-extra-mailbox-sep "
}

#protocol pop3 {
#  pop3_client_workarounds = outlook-no-nuls oe-ns-eoh
#  pop3_uidl_format = %08Xu%08Xv
#}

protocol lda {
  postmaster_address = postmaster@xxxxx.xxxx
  sendmail_path = /usr/sbin/sendmail
  mail_plugins = sieve
}