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Rhys (R-ee-s) Ferris Senior Systems Engineer Identity and Collaboration Operations (ICO) United States Senate, Sergeant at Arms [email protected]<mailto:[email protected]> ☎️202-228-4758 📱202-815-7663 From: mailop <[email protected]> On Behalf Of Dmytro Homoniuk via mailop Sent: Friday, August 14, 2026 11:10 AM Cc: [email protected] Subject: Re: [mailop] themofisher.com with pphosted.com MX entries that don’t resolve (NXDOMAIN) I'm seeing a lot of DNS resolution issues on pphosted domains in general in the last two hours. Also seems like a bunch of cusotmers are complaining they can't access Proofpoint at all https://statusgator.com/services/proofpoint On Fri, Aug 14, 2026 at 3:38 PM Atro Tossavainen via mailop <[email protected]<mailto:[email protected]>> wrote: On Fri, Aug 14, 2026 at 03:12:43PM +0200, Paul Menzel via mailop wrote: > Dear Mail Operators, > > > If somebody has any contacts to thermofisher.com<http://thermofisher.com>, > please tell them, > that currently their email setup is broken: Appears to have been fixed: $ dig +short thermofisher.com<http://thermofisher.com> MX 10 ppmxb.thermofisher.com<http://ppmxb.thermofisher.com>. 10 ppmxa.thermofisher.com<http://ppmxa.thermofisher.com>. (and they have IPs.) > > $ host thermofisher.com<http://thermofisher.com> > thermofisher.com<http://thermofisher.com> has address 208.89.143.75 > thermofisher.com<http://thermofisher.com> mail is handled by 10 > mxb-002a2102.gslb.pphosted.com<http://mxb-002a2102.gslb.pphosted.com>. > thermofisher.com<http://thermofisher.com> mail is handled by 10 > mxa-002a2102.gslb.pphosted.com<http://mxa-002a2102.gslb.pphosted.com>. > $ host > mxb-002a2102.gslb.pphosted.com<http://mxb-002a2102.gslb.pphosted.com>. > Host > mxb-002a2102.gslb.pphosted.com<http://mxb-002a2102.gslb.pphosted.com>. not > found: 3(NXDOMAIN) > $ host > mxa-002a2102.gslb.pphosted.com<http://mxa-002a2102.gslb.pphosted.com>. > Host > mxa-002a2102.gslb.pphosted.com<http://mxa-002a2102.gslb.pphosted.com>. not > found: 3(NXDOMAIN) > $ > > > Kind regards, > > Paul > > > PS: Verified by Google DNS: > > ``` > $ dig @8.8.8.8<http://8.8.8.8> mx > mxb-002a2102.gslb.pphosted.com<http://mxb-002a2102.gslb.pphosted.com>. > > ; <<>> DiG 9.20.26-1-Debian <<>> @8.8.8.8<http://8.8.8.8> mx > mxb-002a2102.gslb.pphosted.com<http://mxb-002a2102.gslb.pphosted.com>. > ; (1 server found) > ;; global options: +cmd > ;; Got answer: > ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 16784 > ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1 > > ;; OPT PSEUDOSECTION: > ; EDNS: version: 0, flags:; udp: 512 > ;; QUESTION SECTION: > ;mxb-002a2102.gslb.pphosted.com<http://mxb-002a2102.gslb.pphosted.com>. > IN MX > > ;; AUTHORITY SECTION: > gslb.pphosted.com<http://gslb.pphosted.com>. 55 IN SOA > ns-sc4.proofpoint.com<http://ns-sc4.proofpoint.com>. > ops.proofpoint.com<http://ops.proofpoint.com>. 2026091872 10800 3600 604800 60 > > ;; Query time: 20 msec > ;; SERVER: 8.8.8.8#53(8.8.8.8) (UDP) > ;; WHEN: Fri Aug 14 15:11:40 CEST 2026 > ;; MSG SIZE rcvd: 117 > > ``` > _______________________________________________ > mailop mailing list > [email protected]<mailto:[email protected]> > https://list.mailop.org/listinfo/mailop -- Atro Tossavainen, Chairman of the Board Infinite Mho Oy, Helsinki, Finland tel. +358-44-5000 600, http://www.infinitemho.fi/ _______________________________________________ mailop mailing list [email protected]<mailto:[email protected]> https://list.mailop.org/listinfo/mailop ________________________________ ________________________________ This email, its contents and attachments contain information from Ziff Davis, Inc. and/or its affiliates which may be privileged, confidential or otherwise protected from disclosure. The information is intended to be for the addressee(s) only. If you are not an addressee, any disclosure, copy, distribution or use of the contents of this message is prohibited. If you have received this email in error, please notify the sender by reply email and delete the original message and any copies.
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