Office 365 Anti-Spam IP Delist Portal is not working "Our messaging service has experienced a temporary issue"

Did you not receive my response to your earlier message? I included screen shots as requested.
Here they are again:

Trying to delist on the portal is not working: Here is the error

https://www.dropbox.com/s/3w9osrwawyukfep/Screenshot%202024-01-16%2010.33.00.png?dl=0

I responded to your previous email this AM. Please do not close this out. I have also engaged the outlook.live people.

Hello there,

We haven't heard from you, so we assume that your issue has already been addressed. We will not be monitoring this thread moving forward so, if you need further assistance, please create a new thread to discuss these concerns by clicking this link: Create a new question (microsoft.com)

Respectfully,

Bryll

Community Moderator

Hi Paul, this is Bryll

Thank you for writing us here in Microsoft Community.

We went through your post carefully and it shows to be a common issue that many users face when their IP address is blocked by Microsoft's spam filters.

As I know, this is not an issue with your @Outlook or @live.co.uk account, it is from the IP ranges or the 3rd party domain that the Company uses to send email that needs to be whitelisted. Here are the strategies that we can recommend:

• Organization should contact ISP and ask them to change your IP address or assign you a static one. This may help you avoid getting blocked by Microsoft's spam filters in the future.
• Organization should check if IP address is listed on any public blacklists. If it is, you will need to contact the blacklist provider and request a removal. This may take some time, depending on their policies and procedures.
• Check if there is an ongoing server maintenance from your area for Outlook.com services. To check, click here: https://portal.office.com/servicestatus

The organization domain administrator may also fill up this form and include all the IP ranges they are using to send emails: New support request (office.com)

Additionally, ask the organization to verify their domain and check their reputation. They can use tools like Microsoft Sender ID Framework and Sender Reputation Data to do this. They can also contact their email provider for assistance.

Should further help be needed, please have this reported to the dedicated Outlook.com In App team who are equipped with all the tools and resources to gain visibility over to your account status and proceed with deeper investigation.

Here's how to submit a support ticket to Outlook.com In App team:

• Go to https://outlook.live.com and sign into your account.
• Click the Help tab.
• Select Help on the ribbon.
• In the Help pane on the right side of the search box, type Contact Support.
• Click the Yes button below the "Still need help?" prompt.
• Click the Chat with a support representative option and follow the on-screen instructions.

Best regards,

Bryll

Community Moderator