[AusNOG] Vocus Office 365 CDN corrupt again

Chad Kelly chad at cpkws.com.au
Mon Apr 6 12:38:32 EST 2020

Hi I hate the way Outlook handles mailinglists but anyway. 
Just on this caching issue, what are you noticing issues with? 
The network is redundant so issues with a single CDN server shouldn't affect your deployments at all. 
Office365 only uses the CDN for webmail access and that has thousands of servers and Ip's available so it's a non issue.
If it's a hybrid environment use more than one network provider. 
Or buy Azure Express Route and get private connectivity.
That way it's  not a problem.
You should log an issue with Microsoft as they will need to sort any network issues. 
The relationship with Akamai is between Microsoft and Akamai. 

Chad Kelly 
CPK Web Services 
Phone 03 52730246
Web https://www.cpkws.com.au

-----Original Message-----
From: AusNOG <ausnog-bounces at lists.ausnog.net> On Behalf Of ausnog-request at lists.ausnog.net
Sent: Monday, 6 April 2020 12:00 PM
To: ausnog at lists.ausnog.net
Subject: AusNOG Digest, Vol 98, Issue 5

Send AusNOG mailing list submissions to
	ausnog at lists.ausnog.net

To subscribe or unsubscribe via the World Wide Web, visit
or, via email, send a message with subject or body 'help' to
	ausnog-request at lists.ausnog.net

You can reach the person managing the list at
	ausnog-owner at lists.ausnog.net

When replying, please edit your Subject line so it is more specific than "Re: Contents of AusNOG digest..."

Today's Topics:

   1. Vocus Office 365 CDN corrupt again (Samuel D. Leslie)


Message: 1
Date: Sun, 5 Apr 2020 08:17:41 +0000
From: "Samuel D. Leslie" <sdl at nexiom.net>
To: "ausnog at lists.ausnog.net" <ausnog at lists.ausnog.net>
Subject: [AusNOG] Vocus Office 365 CDN corrupt again
	<ME3P282MB075591280C02771DD63F4177C8C50 at ME3P282MB0755.AUSP282.PROD.OUTLOOK.COM>
Content-Type: text/plain; charset="us-ascii"

Looks like the Office 365 CDN on the Vocus network is corrupt again. This has happened before (see earlier thread from February 2020). If anyone from Vocus is on this list, or someone here has any contacts at Vocus, it'd be much appreciated if you could raise it with someone who can look into it.

This has been causing some sporadic but frustrating issues on our Office 365 deployments since the start of the year. For anyone else reading this, if you're seeing Office 365 deployments running for an abnormally long time before eventually failing you may be seeing the same issue.

Affected Vocus server:
Name:       a1737.dspw65.akamai.net
Addresses:  2403:4800:3003:4::8bda:1520
Aliases:    officecdn.microsoft.com.edgesuite.net

Sample corrupted SHA-256 file hashes:
Vocus: 692D7A31176A0F26FB018613B4AE24CDC1E49481B95C890A0674637FFE0DA9E9
Correct: B4295DCB07D3F7753B6D939CF950FA63419DD0D85C931580777C419F5C6DD32E

Samuel Leslie


Subject: Digest Footer

AusNOG mailing list
AusNOG at lists.ausnog.net


End of AusNOG Digest, Vol 98, Issue 5

More information about the AusNOG mailing list