Xcess

Mar  3 11:40:16 debian dovecot: imap-login: Debug: SSL: elliptic curve secp384r1 will be used for ECDH and ECDHE key exchanges
Mar  3 11:40:16 debian dovecot: imap-login: Debug: SSL: elliptic curve secp384r1 will be used for ECDH and ECDHE key exchanges
Mar  3 11:40:16 debian dovecot: auth: Debug: Loading modules from directory: /usr/lib/dovecot/modules/auth
Mar  3 11:40:16 debian dovecot: auth: Debug: Read auth token secret from /var/run/dovecot/auth-token-secret.dat
Mar  3 11:40:16 debian dovecot: auth: Debug: auth client connected (pid=2097)
Mar  3 11:40:16 debian dovecot: imap-login: Debug: SSL: where=0x10, ret=1: before/accept initialization [192.168.88.175]
Mar  3 11:40:16 debian dovecot: imap-login: Debug: SSL: where=0x2001, ret=1: before/accept initialization [192.168.88.175]
Mar  3 11:40:16 debian dovecot: imap-login: Debug: SSL: where=0x2001, ret=1: unknown state [192.168.88.175]
Mar  3 11:40:16 debian dovecot: imap-login: Debug: SSL: where=0x2001, ret=1: unknown state [192.168.88.175]

Xcess

##
## Authentication processes
##

# Disable LOGIN command and all other plaintext authentications unless
# SSL/TLS is used (LOGINDISABLED capability). Note that if the remote IP
# matches the local IP (ie. you're connecting from the same computer), the
# connection is considered secure and plaintext authentication is allowed.
# See also ssl=required setting.
#disable_plaintext_auth = yes

Xcess

##
## Authentication processes
##

# Disable LOGIN command and all other plaintext authentications unless
# SSL/TLS is used (LOGINDISABLED capability). Note that if the remote IP
# matches the local IP (ie. you're connecting from the same computer), the
# connection is considered secure and plaintext authentication is allowed.
# See also ssl=required setting.
#disable_plaintext_auth = yes