STARTTLS이슈 해결 패치 적용했는데도 문제가 있나봅니다. 에러로그 "TCPIP" 5788 "2017-09-08 12:02:00.732" "TCP - 192.168.1.202 connected to 192.168.1.101:25." "DEBUG" 5788 "2017-09-08 12:02:00.734" "TCP connection started for session 318" "SMTPD" 5788 318 "2017-09-08 12:02:00.734" "192.168.1.202" "SENT: 220 TSDB-PC ESMTP" "DEBUG" 1300 "2017-09-08 12:02:00.736" "The read operation failed. Bytes transferred: 0 Remote IP: 192.168.1.202, Session: 318, Code: 10054, Message: 현재연결은 원격호스트에 의해 강제로 끊겼습니다" A3로그 "TCPIP" 5788 "2017-09-08 12:06:25.344" "TCP - 192.168.1.9 connected to 192.168.1.101:25." "DEBUG" 5788 "2017-09-08 12:06:25.346" "TCP connection started for session 319" "SMTPD" 5788 319 "2017-09-08 12:06:25.347" "192.168.1.9" "SENT: 220 TSDB-PC ESMTP" "SMTPD" 1300 319 "2017-09-08 12:06:25.348" "192.168.1.9" "RECEIVED: EHLO router" "SMTPD" 1300 319 "2017-09-08 12:06:25.349" "192.168.1.9" "SENT: 250-TSDB-PC[nl]250-SIZE 20480000[nl]250-AUTH LOGIN[nl]250 HELP" "SMTPD" 5824 319 "2017-09-08 12:06:25.350" "192.168.1.9" "RECEIVED: AUTH LOGIN"