Proofpoint did have a service impacting issue with their DNS earlier today. Full service incident information is here: https://proofpoint.my.site.com/community/s/article/Proofpoint-Service-Incide... -----Original Message----- From: Dennis Boone via Outages <outages@outages.org> Sent: Monday, July 14, 2025 1:15 PM To: Outages (Planned & Unplanned) Reporting <outages@outages.org> Cc: Dennis Boone <drb@msu.edu> Subject: [Outages] Re: Proof Point CAUTION!! This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe.

Anyone else notice that proof points "PPOPS.NET" is using a loopback. Can't send them email and their clients can't email outside because * > ppops.net resolves to 127.0.0.1

I live behind the PP abomination, and I don't think I'm seeing any issues with inbound mail. I'm not currently in a position to test outbound properly. I do see that ppops.net resolving to localhost. But if I look up MX records for us, I don't get ppops.net, I get mxa-00165801.gslb.pphosted.com, and that has a routable address. De ______________________________________________ Outages mailing list outages@outages.org Sign up for an account https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.outages.org_accou... To subscribe send an email to outages-join@outages.org To unsubscribe send an email to outages-leave@outages.org To contact the list owners outages-owner@outages.org Archives https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.outages.org_archi... Thank you for using Outages Lists! For post outage discussion, please redirect to outages-discussion@outages.org CONFIDENTIALITY AND LEGAL NOTICE This electronic mail transmission is confidential, may be privileged and should be read or retained only by the intended recipient. If the reader of this transmission is not the intended recipient, you are hereby notified that any distribution or copying hereof is strictly prohibited. If you have received this transmission in error, please immediately notify the sender and remove it from your system. E-mail is not necessarily a secure communication method, therefore the sender shall not be responsible for any changes that occur during its transfer. All e-mails are scanned for viruses, however, files attached to this e-mail may contain viruses that could harm the systems of the recipient. Any opinions expressed in this email must be confirmed in writing and signed by the sender to have legal validity.