Please why pop3d become Login Failed for user joe?
var/log/mail.log Jan 19 22:25:40 raspberrypi postfix/master[8771]: reload -- version 3.1.4, configuration /etc/postfix Jan 19 22:26:26 raspberrypi pop3d: Connection, ip=[::ffff:192.168.1.10] Jan 19 22:26:26 raspberrypi authdaemond: ldap_simple_bind_s failed: Can't contact LDAP server Jan 19 22:26:26 raspberrypi pop3d: LOGIN FAILED, user=joe, ip=[::ffff:192.168.1.10] Jan 19 22:26:41 raspberrypi authdaemond: ldap_simple_bind_s failed: Can't contact LDAP server Jan 19 22:26:41 raspberrypi pop3d: LOGIN FAILED, user=joe, ip=[::ffff:192.168.1.10] Jan 19 22:26:53 raspberrypi authdaemond: ldap_simple_bind_s failed: Can't contact LDAP server Jan 19 22:26:53 raspberrypi pop3d: LOGIN FAILED, user=joe, ip=[::ffff:192.168.1.10] Jan 19 22:31:00 raspberrypi pop3d: Connection, ip=[::ffff:192.168.1.10] Jan 19 22:31:05 raspberrypi authdaemond: ldap_simple_bind_s failed: Can't contact LDAP server Jan 19 22:31:05 raspberrypi pop3d: LOGIN FAILED, user=joe, ip=[::ffff:192.168.1.10] root@raspberrypi:/usr/source/sqwebmail-5.8.3 # ps aux | grep authdaemon root 25535 0.0 0.0 2676 528 pts/0 S+ 22:32 0:00 grep --color=auto authdaemon root 28087 0.0 0.1 1820 1132 ? S 20:53 0:00 /usr/local/sbin/courierlogger -pid=/usr/local/var/spool/authdaemon/pid -start /usr/local/libexec/courier-authlib authdaemond root 28088 0.0 0.3 6568 3200 ? S 20:53 0:00 /usr/local/libexec/courier-authlib/authdaemond root 28089 0.0 0.3 6952 3176 ? S 20:53 0:00 /usr/local/libexec/courier-authlib/authdaemond root 28090 0.0 0.3 6952 3152 ? S 20:53 0:00 /usr/local/libexec/courier-authlib/authdaemond root 28091 0.0 0.3 6952 3160 ? S 20:53 0:00 /usr/local/libexec/courier-authlib/authdaemond root 28092 0.0 0.0 6568 412 ? S 20:53 0:00 /usr/local/libexec/courier-authlib/authdaemond root 28093 0.0 0.3 6952 3176 ? S 20:53 0:00 /usr/local/libexec/courier-authlib/authdaemond root@raspberrypi:/usr/source/sqwebmail-5.8.3 #