I hope Outlook does not completley mess up this message, otherwise please bear with me since I'm forced to use it.
> As a heads up to any of our Microsoft contacts, and to anyone else who may > see their own filters hitting this today, > there appears to be missing PTR records over on the MS side again right now. > Most specifically, the IP 40.107.236.10 > called it into question on our side. The IP would send it's HELO as > NAM11-BN8-obe.outbound.protection.outlook.com, > which resolves to 23.103.198.239, and while 40.107.236.10 has no PTR at all. Unfortunately it's not only right now, but has been like this since I can remember. Examples of Microsoft servers with broken DNS setup from this week: 40.93.12.0 resolves to mail-eus2azlp17010000.outbound.protection.outlook.com. 40.93.12.3 resolves to mail-eus2azlp17010003.outbound.protection.outlook.com. 40.93.12.4 resolves to mail-eus2azlp17010004.outbound.protection.outlook.com. 40.93.12.8 resolves to mail-eus2azlp17010008.outbound.protection.outlook.com. 52.101.56.14 resolves to mail-eus2azon11020014.outbound.protection.outlook.com. 52.101.56.15 resolves to mail-eus2azon11020015.outbound.protection.outlook.com. 52.101.56.16 resolves to mail-eus2azon11020016.outbound.protection.outlook.com. 52.101.56.17 resolves to mail-eus2azon11020017.outbound.protection.outlook.com. 52.101.56.18 resolves to mail-eus2azon11020018.outbound.protection.outlook.com. 52.101.56.19 resolves to mail-eus2azon11020019.outbound.protection.outlook.com. 52.101.56.20 resolves to mail-eus2azon11020020.outbound.protection.outlook.com. 52.101.56.21 resolves to mail-eus2azon11020021.outbound.protection.outlook.com. 52.101.56.22 resolves to mail-eus2azon11020022.outbound.protection.outlook.com. 52.101.56.23 resolves to mail-eus2azon11020023.outbound.protection.outlook.com. 52.101.56.24 resolves to mail-eus2azon11020024.outbound.protection.outlook.com. 52.101.56.27 resolves to mail-eus2azon11020027.outbound.protection.outlook.com. 52.102.138.5 resolves to mail-eus2azhn15010005.outbound.protection.outlook.com. The A records all resolve back to 127.0.0.1... Their HELO hostnames are again completely different and neither match the IP nor the A record. Best regards Oliver -- ________________________________ dmTECH GmbH Am dm-Platz 1, 76227 Karlsruhe * Postfach 10 02 34, 76232 Karlsruhe Telefon 0721 5592-2500 Telefax 0721 5592-2777 dmt...@dm.de<mailto:dmt...@dm.de> * www.dmTECH.de<http://www.dmtech.de> GmbH: Sitz Karlsruhe, Registergericht Mannheim, HRB 104927 Geschäftsführer: Christoph Werner, Martin Dallmeier, Roman Melcher ________________________________ Datenschutzrechtliche Informationen Wenn Sie mit uns in Kontakt treten, beispielsweise wenn Sie an unser ServiceCenter Fragen haben, bei uns einkaufen oder unser dialogicum in Karlsruhe besuchen, mit uns in einer geschäftlichen Verbindung stehen oder sich bei uns bewerben, verarbeiten wir personenbezogene Daten. Informationen unter anderem zu den konkreten Datenverarbeitungen, Löschfristen, Ihren Rechten sowie die Kontaktdaten unserer Datenschutzbeauftragten finden Sie hier<https://www.dm.de/datenschutzerklaerung-kommunikation-mit-externen-493832>. _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
