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Whitelist domain

hello, my domain used to work perfectly between ingoing and outgoing to emails that end with hotmail.com. however lately, I am receiving a rejection email from outlook. I have contacted support from my end that uses Sophos security firewall. we tried changing the IP, it worked for 1 day then got blocked again.

any idea how can i apply to whitelist my domain ?

DM3NAM03FT018.mail.protection.outlook.com gave this error:
Unfortunately, messages from [x.x.x.x] weren't sent. Please contact your Internet service provider since part of their network is on our block list (AS3150). You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors. [DM3NAM03FT018.eop-NAM03.prod.protection.outlook.com] 

this is the error i got

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I am having a similar problem. The domain sending the email HAS DKIM and SPF records enabled, but incoming emails to @live.com are still failing.

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You can't whitelist your domain, but you can try to get removed from Microsoft's blacklist.

Fill out this form (https://support.microsoft.com/en-us/getsupport?oaspworkflow=start_1.0.0.0&wfname=capsub&productkey=edfsmsbl3)

When submitting you get an error that means there's too much info in one of the text fields. Correct that and then submit.

Then wait for an answer.

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We have completed reviewing the IP(s) you submitted. The following table contains the results of our investigation.


Not qualified for mitigation

thats the reply i got

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Then your only option is to change domain names and/or move your mail servers to a new IP address.

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i have changed the IP address and it got blocked the next day.

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Then you should analyze who or what is using your email servers to send spam to Microsoft customers. Once you do that and get your system cleaned up, try again.

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Last updated April 30, 2023 Views 1,364 Applies to: