Hotmail blacklist removal

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The dedicated IPs provided to us by AWS to send emails have been black listed by hotmail.com : 550 5.7.1 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 (S3140). You can also ....

How can I ask Amazon to request these IPs to be deblaclisted ?

PS : Senderscore rates these IPs 99/100

Marc
asked 2 years ago64 views
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