[AusNOG] Microsoft missing RDNS

Joshua Stark starkjs at gmail.com
Sat Jun 12 08:33:55 EST 2021


Hi Mike,

Those two IPs have a reverse for me, do they work for you now since 
opening your ticket with MS?

% dig -x 40.92.63.85 ; <<>> DiG 9.10.6 <<>> -x 40.92.63.85 ;; global 
options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: 
NXDOMAIN, id: 25838 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 
1, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 1460

;; QUESTION SECTION: ;85.63.92.40.in-addr.arpa.    IN    PTR

;; AUTHORITY SECTION: 92.40.in-addr.arpa.    300    IN    SOA    
ns1-07.azure-dns.com. azuredns-hostmaster.microsoft.com. 1 3600 300 
2419200 300

% dig -x 40.92.62.31 ; <<>> DiG 9.10.6 <<>> -x 40.92.62.31 ;; global 
options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: 
NXDOMAIN, id: 53408 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 
1, ADDITIONAL: 1

;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 1460

;; QUESTION SECTION: ;31.62.92.40.in-addr.arpa.    IN    PTR ;; 
AUTHORITY SECTION: 92.40.in-addr.arpa.    300    IN    SOA    
ns1-07.azure-dns.com. azuredns-hostmaster.microsoft.com. 1 3600 300 
2419200 300


Thanks
Josh


*Joshua Stark*
Email: starkjs at gmail.com

On 11/6/21 09:17, Mike Manning wrote:
>
> Hi all,
>
> Anyone else here experiencing missing RDNS for a swath of IP’s from 
> Microsoft on a few different subnets? I’ve opened a ticket with 
> Microsoft netops for it and I’ve done an rDNS bypass on our local 
> antispam filter however we’re now seeing o365 clients with the same 
> issue when trying to receive emails from anyone with an @outlook.com 
> or @msn.com email address.. where do you draw the line in adding 
> bypass after bypass?
>
> host 40.92.63.85
>
> Host 85.63.92.40.in-addr.arpa. not found: 3(NXDOMAIN)
>
> host 40.92.62.31
>
> Host 31.62.92.40.in-addr.arpa. not found: 3(NXDOMAIN)
>
> *Mike Manning*
> *Network Engineer*
>
> *Matilda Internet*
> ________________
>
> (Telephone +61 7 4953 0711
> (Fax +61 7 4849 5000
> 29 Gregory Street, Mackay, QLD 4740, Australia
> *Emailmike at matilda.net.au
> <mailto:mike at matilda.net.au>Websitewww.matilda.net.au
> <http://www.matilda.net.au/>
>
> This email and any files transmitted with it are confidential and are 
> intended solely for the use of the individual or entity to whom it is 
> addressed.  If you are not the recipient be advised that you have 
> received this email in error and that any use, dissemination, 
> forwarding, printing copying or use of the contents contained in this 
> e-mail and any file attachments is strictly prohibited.  If you have 
> received this email in error please immediately notify the sender by 
> telephone or by reply email to the sender.  You must destroy the 
> original transmission and its contents.  It is recommended that you 
> virus test the information and any attachments.  Matilda Internet does 
> not accept liability for any loss or damage howsoever occurred as a 
> result of this email transmission or any attachments to it.
>
>
> _______________________________________________
> AusNOG mailing list
> AusNOG at lists.ausnog.net
> http://lists.ausnog.net/mailman/listinfo/ausnog

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ausnog.net/pipermail/ausnog/attachments/20210612/ae5c5a17/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/pkcs7-signature
Size: 4486 bytes
Desc: S/MIME Cryptographic Signature
URL: <http://lists.ausnog.net/pipermail/ausnog/attachments/20210612/ae5c5a17/attachment.bin>


More information about the AusNOG mailing list