Re: [mailop] New *.outbound.protection.outlook.com servers without PTR
On 22 May 2018, at 6:41 (-0400), Bernhard Schmidt wrote: Hi, recently (about a week ago) *.outbound.protection.outlook.com started sending from three new /24 without valid FCrDNS That strikes me as a hint from MS. In the past, their DNS & HELO names have been almost always simple and correct on their 'clean' outlets and odd or broken in various ways on their sewer outlets. It has always been entirely reasonable to refuse all mail from IP's that authoritatively lack PTRs, especially when the same operator has PTRs for their other mail outlets and the nameless range is clearly a cutout with named IPs. You do not owe MS customers deliverability. -- Bill Cole b...@scconsult.com or billc...@apache.org (AKA @grumpybozo and many *@billmail.scconsult.com addresses) Currently Seeking Steadier Work: https://linkedin.com/in/billcole ___ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
Re: [mailop] New *.outbound.protection.outlook.com servers without PTR
Those responsible have been poked. 😊 Aloha, Michael. -- Michael J Wise Microsoft Corporation| Spam Analysis "Your Spam Specimen Has Been Processed." Got the Junk Mail Reporting Tool<http://www.microsoft.com/en-us/download/details.aspx?id=18275> ? From: mailop On Behalf Of Vladimir Gabrielescu Sent: Tuesday, May 22, 2018 3:44 AM To: Bernhard Schmidt ; mailop@mailop.org Subject: Re: [mailop] New *.outbound.protection.outlook.com servers without PTR You are not alone, we've seen this too. From: mailop mailto:mailop-boun...@mailop.org>> on behalf of Bernhard Schmidt mailto:bernhard.schm...@lrz.de>> Sent: Tuesday, May 22, 2018 6:41:18 AM To: mailop@mailop.org<mailto:mailop@mailop.org> Subject: [mailop] New *.outbound.protection.outlook.com servers without PTR Hi, recently (about a week ago) *.outbound.protection.outlook.com started sending from three new /24 without valid FCrDNS 40.92.73.0/24 40.92.74.0/24 40.92.75.0/24 i.e. EUR04-HE1-obe.outbound.protection.outlook.com (HELO) sending from 40.92.73.10 The /16 is delegated to msft.net We have added them to the whitelist for scoring, but unfortunately the whitelist for Greylisting (which is necessary because the servers retry from different IPs) is FCrDNS based. Best Regards, Bernhard -- Bernhard Schmidt Netzbetrieb / IPv6 / DNSSEC Leibniz-Rechenzentrum Leibniz Supercomputing Centre Boltzmannstr. 1 D-85748 Garching b. Muenchen Tel: +49 89 35831-7885 E-Mail/Jabber: bernhard.schm...@lrz.de<mailto:bernhard.schm...@lrz.de> ___ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
Re: [mailop] New *.outbound.protection.outlook.com servers without PTR
You are not alone, we've seen this too. From: mailop on behalf of Bernhard Schmidt Sent: Tuesday, May 22, 2018 6:41:18 AM To: mailop@mailop.org Subject: [mailop] New *.outbound.protection.outlook.com servers without PTR Hi, recently (about a week ago) *.outbound.protection.outlook.com started sending from three new /24 without valid FCrDNS 40.92.73.0/24 40.92.74.0/24 40.92.75.0/24 i.e. EUR04-HE1-obe.outbound.protection.outlook.com (HELO) sending from 40.92.73.10 The /16 is delegated to msft.net We have added them to the whitelist for scoring, but unfortunately the whitelist for Greylisting (which is necessary because the servers retry from different IPs) is FCrDNS based. Best Regards, Bernhard -- Bernhard Schmidt Netzbetrieb / IPv6 / DNSSEC Leibniz-Rechenzentrum Leibniz Supercomputing Centre Boltzmannstr. 1 D-85748 Garching b. Muenchen Tel: +49 89 35831-7885 E-Mail/Jabber: bernhard.schm...@lrz.de ___ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
[mailop] New *.outbound.protection.outlook.com servers without PTR
Hi, recently (about a week ago) *.outbound.protection.outlook.com started sending from three new /24 without valid FCrDNS 40.92.73.0/24 40.92.74.0/24 40.92.75.0/24 i.e. EUR04-HE1-obe.outbound.protection.outlook.com (HELO) sending from 40.92.73.10 The /16 is delegated to msft.net We have added them to the whitelist for scoring, but unfortunately the whitelist for Greylisting (which is necessary because the servers retry from different IPs) is FCrDNS based. Best Regards, Bernhard -- Bernhard Schmidt Netzbetrieb / IPv6 / DNSSEC Leibniz-Rechenzentrum Leibniz Supercomputing Centre Boltzmannstr. 1 D-85748 Garching b. Muenchen Tel: +49 89 35831-7885 E-Mail/Jabber: bernhard.schm...@lrz.de smime.p7s Description: S/MIME Cryptographic Signature ___ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
