Hi, Is anyone else seeing any problems delivering to domains hosted at Proofpoint?
We're seeing most (but not all) of our emails deferred, with a message to check the sending IP address at ipcheck.proofpoint.com. When we do that, the IP addresses are reported as not blocked. E.g. status=deferred (host mx0a-0016c301.pphosted.com[67.231.148.70] refused to talk to me: 421 Deferred - see https://ipcheck.proofpoint.com/?ip=78.143.254.171) I've contacted postmas...@proofpoint.com and also the recipient customer has contacted them, but just wondering whether this is a general issue or just us. The sending IP addresses in question are 78.143.254.171-174 Thanks, Andy _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
