Ich betreibe seit kurzem einen MailPlus Server. Alles funktioniert wie erwartet. Jedoch bekomme ich täglich einen Report mit "Warnings". Mal sind es 3, mal 87! Meine Frage: Sollte ich etwas unternehmen, um das System besser zu sichern und wenn ja, was? Hier beispielhaft eine Reportdatei. (Die IP 212.70.149.67 habe ich schon in meine Blacklist eingetragen).
Postfix log summaries for Jul 10
...
message deferral detail: none
message bounce detail (by relay): none
message reject detail: none
message reject warning detail: none
message hold detail: none
message discard detail: none
smtp delivery failures: none
Warnings
--------
smtpd (total: 13)
2 hostname medvedevvorisosunok.prohoster.info does not resolve to address 185.232.52.64: Name or service not known
1 unknown[212.70.149.67]: SASL LOGIN authentication failed: authentication failure, username=[grgewrgeg@meineDomain.de]
1 unknown[212.70.149.67]: SASL LOGIN authentication failed: authentication failure, username=[root@meineDomain.de]
1 hostname zg-0708a-135.stretchoid.com does not resolve to address 192.241.222.214: Name or service not known
1 hostname zg-0708b-345.stretchoid.com does not resolve to address 162.243.129.116: Name or service not known
1 hostname zg-0708a-337.stretchoid.com does not resolve to address 192.241.236.123: Name or service not known
1 hostname worker-13.sfj.censys-scanner.com does not resolve to address 192.35.168.214
1 hostname zg-0708b-195.stretchoid.com does not resolve to address 192.241.239.218: Name or service not known
1 non-SMTP command from unknown[185.232.52.64]: GET / HTTP/1.1
1 non-SMTP command from tor-exit-7.zbau.f3netze.de[185.220.100.246]: GET / HTTP/1.1
1 TLS library problem: error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown protocol:s23_srvr.c:643:
1 TLS library problem: error:1407609C:SSL routines:SSL23_GET_CLIENT_HELLO:http request:s23_srvr.c:397:
tlsproxy (total: 1)
1 TLS library problem: error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown protocol:s23_srvr.c:643:
Fatal Errors: none
Panics: none
Master daemon messages
----------------------
2 reload -- version 3.0.0, configuration /var/packages/MailPlus-Server/target/etc
Postfix log summaries for Jul 10
...
message deferral detail: none
message bounce detail (by relay): none
message reject detail: none
message reject warning detail: none
message hold detail: none
message discard detail: none
smtp delivery failures: none
Warnings
--------
smtpd (total: 13)
2 hostname medvedevvorisosunok.prohoster.info does not resolve to address 185.232.52.64: Name or service not known
1 unknown[212.70.149.67]: SASL LOGIN authentication failed: authentication failure, username=[grgewrgeg@meineDomain.de]
1 unknown[212.70.149.67]: SASL LOGIN authentication failed: authentication failure, username=[root@meineDomain.de]
1 hostname zg-0708a-135.stretchoid.com does not resolve to address 192.241.222.214: Name or service not known
1 hostname zg-0708b-345.stretchoid.com does not resolve to address 162.243.129.116: Name or service not known
1 hostname zg-0708a-337.stretchoid.com does not resolve to address 192.241.236.123: Name or service not known
1 hostname worker-13.sfj.censys-scanner.com does not resolve to address 192.35.168.214
1 hostname zg-0708b-195.stretchoid.com does not resolve to address 192.241.239.218: Name or service not known
1 non-SMTP command from unknown[185.232.52.64]: GET / HTTP/1.1
1 non-SMTP command from tor-exit-7.zbau.f3netze.de[185.220.100.246]: GET / HTTP/1.1
1 TLS library problem: error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown protocol:s23_srvr.c:643:
1 TLS library problem: error:1407609C:SSL routines:SSL23_GET_CLIENT_HELLO:http request:s23_srvr.c:397:
tlsproxy (total: 1)
1 TLS library problem: error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown protocol:s23_srvr.c:643:
Fatal Errors: none
Panics: none
Master daemon messages
----------------------
2 reload -- version 3.0.0, configuration /var/packages/MailPlus-Server/target/etc