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how to solve to block ip from ms hotmail(live.com)

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edited Feb 19, 2021 1:53AM in Oracle Cloud Infrastructure - General 3 comments

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Hi

I am running a wordpress site through the compute service.

WordPress sends Email through PHPMailer

If I send an email from my compute server to @hotmail.com(live.com) of MS, it returns that the ip is blocked.

======================== return error message ========================

message-id=<[email protected]>
 to=<[email protected]>, relay=hotmail-com.olc.protection.outlook.com[104.47.12.33]:25, 
 delay=1.1, delays=0.02/0/0.79/0.29, dsn=5.7.1, status=bounced (host hotmail-com.olc.protection.outlook.com[104.47.12.33] 
 said: 550 5.7.1 Unfortunately, messages from [MY_COMPUTE_IP] 
 weren't sent. Please contact your Internet service provider since part of their network is on our block list (S3140). 
 You can also refer your provider to

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