Microsoft sperrt anhand von unklaren Richtlinien scheinbar wahllos IP-Adressen für die Maileinlieferung zu ihren Diensten (outlook.com, hotmail.com, live.de,…). Traurige Beispiele dafür findest du bei Disroot und hier. Nachfolgend findest du ein paar Hinweise zum Vorgehen, um die eigene IP-Adresse entsperren zu lassen.
relay=hotmail-com.olc.protection.outlook.com[104.47.0.0]:25, delay=2.9, delays=2/0/0.67/0.18, dsn=5.7.1, status=bounced (host hotmail-com.olc.protection.outlook.com[104.47.0.0] said: 550 5.7.1 Unfortunately, messages from [51.75.0.0] weren't sent. Please contact your Internet service provider since part of their net work is on our block list (S3140). You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors. [SG2APC01FT042.eop-APC01.prod.protection.outlook.com]
Die folgenden Tests geben Hinweise darauf, ob mit deinem Setup alles in Ordnung ist:
Kontakt kann über zwei Wege erfolgen:
In der Regel wird Microsoft die Entsperrung bei der ersten Anfrage ablehnen. Deine mögliche Antwort darauf könnte so aussehen:
Hello, I would like to ask to have 0.0.0.0 considered manually delisted from the outlook.com blocklist. According to the IP status page with Smart Network Data Services (SNDS), our mail server with the IP address of 0.0.0.0 is blocked due to user complaints or other evidence of spamming. In fact the user complaint rate is below 0.1 % for all the days that we can retrieve data for (have a look at the attached csv export from SNDS). As you can sure examine there was never a report sending to us by you JMRP. We do believe, however, that this IP is simply being blocked as a consequence of a larger sweep against our service provider. The mail server adheres to all Microsoft Policies when delivering email to your mail servers. It's actively monitor with SNDS and JMRP. The following technologies are implemented on this server: SPF, DKIM, Mail filtering and scanning for Spam for incomming and outgooing mails. Additionally, We can offer the following: The mail server 0.0.0.0 is not listed on any public blocklist. The mail server can deliver email to every other major service provider. As you see there's no reason to keep up with the blocking. We ask you to unblock 0.0.0.0. Regards, YOUR_NAME