Thank you cmaxwell for your suggestion, my fault!
Now the service started but TLS_CIPHER_LIST appear incompatible with clients
"courier-pop3s: couriertls: connect: error:1408A0C1:SSL routines:SSL3_GET_CLIENT_HELLO:no shared cipher"
Hi all,
after reconfiguring /etc/courier-imap/pop3d-ssl in this way:
SSLPORT=995
SSLADDRESS=0
SSLPIDFILE=/var/run/pop3d-ssl.pid
SSLLOGGEROPTS="-name=pop3d-ssl"
POP3DSSLSTART=NO
POP3_STARTTLS=YES
POP3_TLS_REQUIRED=1
COURIERTLS=/usr/bin/couriertls
TLS_PROTOCOL=TLS1
TLS_STARTTLS_PROTOCOL=TLS1...