On Mon, Aug 23, 2021 at 05:16:09PM +0100, Neil Youngman via mailop wrote: > Is anybody else seeing issues with some Microsoft RDNS failing > intermittently. I'm seeing RDNS failures in our Exim logs, but when I > check the IPs from the command line, there are no obvious issues and it > isn't affecting all our traffic from Microsoft.
Yes; yesterday I noticed intermittend RDNS lookup failures for various outbound.protection.outlook.com hosts; seems to be affecting ~20% of our hotmail traffic. As we greylist on RDNS failures, mails will get delivered eventually, so I didn't spent much time investigating this issue... -- Thomas Mechtersheimer - Necklenbroicher Str. 45a - D-40667 Meerbusch - Germany EMail: [email protected] IRC-Nick: Mechti Of course I'm crazy, but that doesn't mean I'm wrong. I'm mad but not ill. _______________________________________________ mailop mailing list [email protected] https://list.mailop.org/listinfo/mailop
