Maybe your IP is not blocked (as they told you in form result) but what about 
any IP range that includes your IP? If it’s an IP range ban, your IP is not 
explicitly blocked so form won’t find it in the list.

> Le 18 janv. 2022 à 01:07, John Gateley via mailop <mailop@mailop.org> a écrit 
> :
> 
>  Hi Alex, and thank you for responding.
> 
> I went to that form, entered the info, got the confirmation email,
> and then when I do step 3 to unblock, it says: 
> 
> The IP address in question is not currently blocked in our system. Please 
> refer to the email message you received from Microsoft and follow the steps 
> it suggests.
> 
> I had done these steps several times (with the same results) several days 
> ago, but stopped when
> the "forward" stopped getting responses.
> 
> Reading between the lines, I think the response to the forward is a standard 
> "click here"
> message without any actual investigation, and just takes you to that link.
> 
> The full error message (sorry, should have put this in before) says:
> 
>     microsoft-com.mail.protection.outlook.com[104.47.54.36] said: 550 5.7.511
>     Access denied, banned sender[50.116.29.164]. To request removal from this
>     list please forward this message to del...@messaging.microsoft.com. For
>     more information please go to
>     http://go.microsoft.com/fwlink/?LinkId=526653. AS(1410)
>     [DM3NAM06FT011.Eop-nam06.prod.protection.outlook.com] (in reply to RCPT TO
>     command)
> 
> 
> This looks like Outlook to me, not Office 365. I will try the support ticket 
> referenced at the
> tail end of the Office 365 process.
> 
> Thanks again for the response.
> 
> John
> 
> On 1/17/22 1:32 PM, Alex Irimia via mailop wrote:
>> Hi John,
>> 
>> The error message you've referenced is related to Office365 domains, not 
>> Outlook.
>> You should be able to unblock your IP on this form: 
>> https://sender.office.com/
>> 
>> On Mon, Jan 17, 2022 at 7:56 PM John Gateley via mailop <mailop@mailop.org> 
>> wrote:
>>> Hello,
>>> 
>>> Thanks to a helpful message from Hetzner, I signed up for Microsoft SNDS.
>>> 
>>> According to SNDS my IP address is not blocked, but is "Junked due to user 
>>> complaints or other evidence of spamming"
>>> 
>>> I still get 
>>> 550 5.7.511
>>>     Access denied, banned sender[50.116.29.164]
>>> 
>>> every time I send to a Microsoft Outlook address.
>>> I forward the bounce, as instructed, get the "we will respond in 24 hours" 
>>> response, but then nothing.
>>> 
>>> My server is very small, just my wife and I, and we do not spam ever. The 
>>> "junked" is due to someone else in a close by IP address.
>>> 
>>> I don't have enough information to open a ticket, I think. Any suggestions 
>>> for a next step?
>>> 
>>> Thanks!
>>> 
>>> John
>>> _______________________________________________
>>> mailop mailing list
>>> mailop@mailop.org
>>> https://list.mailop.org/listinfo/mailop
>> 
>> 
>> -- 
>> Regards,
>> Alex Irimia
>> 
>> 
>> Postmastery
>> Email Infrastructure, Analytics, DMARC and Deliverability
>> Amsterdam, NL/Paris, FR
>> T: +31 20 261 0438
>> M: +40 757 192 953
>> SKYPE: alex-irimia
>> 
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>> greatly appreciated. 
>> 
>> 
>> 
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> 
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