Microsoft IPV6 Address on Blacklist - Causing outbound mail to be marked as SPAM !!!!!!!!!!!!!

I have the same issue, checking MX records, setting up DKIM and DMARC I find that MX-Toolbox reports:

fe80::cd8:c95a:6ddb:4a7f as Blacklisted on Bogon list

https://mx****/problem/Blacklist/CYMRU-BOGONS-IPv6/?abt_id=AB-618&abt_var=Control&reason=127.0.0.2&hidetoc=1&showLogin=1&action=blacklist:fe80::cd8:c95a:6ddb:4a7f&link=button&ip=fe80::cd8:c95a:6ddb:4a7f&page=prob_blacklist

[Extract:]
"If you have found yourself listed, most likely you have an IP address in the range 10.x.x.x, 172.16.x.x, 192.168.x.x or fe80::  These IP addresses are not the actual address you have on the Internet. They are used specifically for local networks only. They are known as private or reserved addresses"

Hi again Inema,

Here are my answers in sequence

* We are pure cloud

* We purchase through a vendor

* The Backlisted addresses are not on our side , they are EOP

* no bounces or NDR's I'm aware of as yet !

Greetings Barry Campbell2,

Hope you are doing well!

To understand the situation and be able to offer you relevant suggestions, we would need a little more information from you. Kindly help us in providing the following information.

• May I know your current environment? Is It Exchange Hybrid, on-premises exchange (Exchange server) or pure cloud?
• May I please know how you purchased the Microsoft 365 subscription you have? May I know if you purchased from Microsoft directly or through a reseller partner?
• May I know where is Blacklisted where? Is it in Exchange Online Protection side or third party?
• May I know if you are getting any bounce message or Non Delivery report? If so, would you mind to provide the screenshot of bounce message you are encountering via private message for further analysis and the privacy of your data? For data security reasons, please provide some above requested information in private message. Here is the steps for private message: Click on Account manager-->my profile-->View private message. (See below screenshot)

This requested information will help us to narrow down the scenario and find the appropriate information.

We are looking forward to your response! Thanks for your precious time. Have a nice day!

Best regards,

Inema | Microsoft Community Moderator

i am a global admin , cant seem to log in to raise a ticket though , from help and support i search for the topic but no link for " these arent helpful " and so i cannot raise a ticket or ask for Microsoft contact.

The only support options i have are our Licence Vendors and support company. is this the reasons why ? do i have to edit their relationship with our organisation

now have the additionally listing too -

LISTED BACKSCATTERER 85.115.52.190 was listed

tried to log a request via Services Hub (microsoft.com) but there are no other suited Product / support types that dont challenge me for a subscription or contract

followed product category for office products & Office 365 which leads me back to my admin

n portal ?? , so just a massive loop of unhelpfulness !!

Dear Barry Campbell2,

Good day! Thank you for posting to Microsoft Community. We are glad to assist!

According to your description regarding "Microsoft IPV6 Address on Blacklist - Causing outbound mail to be marked as SPAM !!!!!!!!!!!!!"  My sincerest apologies for the inconvenience this might be causing you. May I please know do you have Microsoft 365 global admin privilege? Regarding your situation, I therefore believe that this issue should be further investigated by our online technical support team. A support Engineer can further connect with you remotely, for further troubleshooting and involve the backend team where need be. The team might request for your public IP address or collect some logs from your outlook. Please understand that as public forum support, we don’t have higher permissions to check and analyze these logs or check the IP addresses and considering your scenario maybe inconveniencing, to quickly help assist, kindly contact your organization admin or you can create a service request to report this symptom to our online channel.

Below are the steps to open service request:

Here is contact support document: Get support - Microsoft 365 admin | Microsoft Learn

Thanks for your precious time and your understanding would be highly appreciated. Have a nice day!

Best regards,

Inema | Microsoft Community Moderator