Hallo zusammen! Auf unseren MX hosts werden Mails abgelehnt. Allerdings kann ich die Meldung der Ablehnung nicht nachvollziehen: Jan 25 19:44:20 mx2 postfix/smtpd[13298]: connect from mail-wm0-f46.google.com[74.125.82.46] Jan 25 19:44:20 mx2 postfix/smtpd[13298]: NOQUEUE: reject: RCPT from mail-wm0-f46.google.com[74.125.82.46]: 554 5.7.1 <...@ku.edu.tr>: Sender address rejected: Bogus NS/MX in RFC 1918 private network; from=<...@ku.edu.tr> to=<...> proto=ESMTP helo= Jan 25 19:44:20 mx2 postfix/smtpd[13298]: disconnect from mail-wm0-f46.google.com[74.125.82.46] Die Fehlermeldung deutet auf folgende Tests hin: /etc/postfix/main.cf: smtpd_sender_restrictions = [...] check_sender_mx_access cidr:/etc/postfix/bogon_networks.cidr check_sender_ns_access cidr:/etc/postfix/bogon_networks.cidr /etc/postfix/bogon_networks.cidr: # Quellen: http://www.iana.org/assignments/ipv4-address-space/ # Quellen: http://www.iana.org/assignments/ipv6-address-space/ # # IPv4 # 0.0.0.0/8 REJECT Bogus NS/MX in broadcast network 10.0.0.0/8 REJECT Bogus NS/MX in RFC 1918 private network 100.64.0.0/10 REJECT BOGUS NS/MX in RFC 6598 private network 127.0.0.0/8 REJECT Bogus NS/MX in loopback network 169.254.0.0/16 REJECT Bogus NS/MX in link lokal network 172.16.0.0/12 REJECT Bogus NS/MX in RFC 1918 private network 192.0.2.0/24 REJECT Bogus NS/MX in TEST-NET network 192.168.0.0/16 REJECT Bogus NS/MX in RFC 1918 private network 198.18.0.0/15 REJECT Bogus NS/MX in RFC 2544 benchmark network 224.0.0.0/4 REJECT Bogus NS/MX in class D multicast network 240.0.0.0/5 REJECT Bogus NS/MX in class E reserved network 248.0.0.0/5 REJECT Bogus NS/MX in reserved network Die MX hosts für die Absenderadresse lauten: # host ku.edu.tr ku.edu.tr has address 88.255.96.208 ku.edu.tr mail is handled by 30 ASPMX4.GOOGLEMAIL.COM. ku.edu.tr mail is handled by 30 ASPMX2.GOOGLEMAIL.COM. ku.edu.tr mail is handled by 30 ASPMX3.GOOGLEMAIL.COM. ku.edu.tr mail is handled by 20 ALT1.ASPMX.L.GOOGLE.COM. ku.edu.tr mail is handled by 30 ASPMX5.GOOGLEMAIL.COM. ku.edu.tr mail is handled by 10 ASPMX.L.GOOGLE.COM. ku.edu.tr mail is handled by 20 ALT2.ASPMX.L.GOOGLE.COM. Alle samt haben keine Adressen aus dem reservierten privaten IPv4 Adressraum. Allerdings liefern auch alle eine IPv6 Adresse zurück. ASPMX2.GOOGLEMAIL.COM has address 74.125.68.27 ASPMX2.GOOGLEMAIL.COM has IPv6 address 2404:6800:4003:c02::1a ASPMX3.GOOGLEMAIL.COM has address 64.233.189.27 ASPMX3.GOOGLEMAIL.COM has IPv6 address 2404:6800:4008:c07::1a ASPMX4.GOOGLEMAIL.COM has address 173.194.72.27 ASPMX4.GOOGLEMAIL.COM has IPv6 address 2404:6800:4008:c01::1b ASPMX5.GOOGLEMAIL.COM has address 74.125.25.27 ASPMX5.GOOGLEMAIL.COM has IPv6 address 2607:f8b0:400e:c03::1a ASPMX.L.GOOGLE.COM has address 173.194.65.27 ASPMX.L.GOOGLE.COM has IPv6 address 2a00:1450:4013:c00::1a ALT1.ASPMX.L.GOOGLE.COM has address 74.125.68.27 ALT1.ASPMX.L.GOOGLE.COM has IPv6 address 2404:6800:4003:c02::1a ALT2.ASPMX.L.GOOGLE.COM has address 64.233.189.27 ALT2.ASPMX.L.GOOGLE.COM has IPv6 address 2404:6800:4008:c07::1a Wie kann ich das weiter debuggen? Hat jemand eine Ahnung, was ich hier falsch konfiguriert haben könnte? # postconf mail_version mail_version = 2.11.0 Vielen Dank und Grüße Lars -- Informationstechnologie Berlin-Brandenburgische Akademie der Wissenschaften Jägerstraße 22-23 10117 Berlin Tel.: +49 30 20370-352 http://www.bbaw.de