08-04-2020 11:04 PM
Hello team,
We are facing the below issue.
It seems that hotmail refuses to accept our mail and the returning error is:
[104.47.55.33]
Remote Server returned '<[104.47.55.33] #5.0.0 smtp; 5.1.0 - Unknown address error 550-"5.7.1 Unfortunately, messages from [195.47.233.13] weren't sent. Please contact your Internet service provider since part of their network is on our block list (S3150). You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors. [MW2NAM10FT066.eop-nam10.prod.protection.outlook.com]" (delivery attempts: 0)>'
Does this mean that hotmail has blacklisted our public ip for some reason?
We have a deployment with two ESAs in a cluster running 13.0.0 - 392. Let's say mip1 and mip2. We face the issue only with mip1. When we send mails through mip2, hotmail accepts them.
Any suggestions?
Best Regards
Chrysostomos
Solved! Go to Solution.
08-05-2020 02:49 AM
08-05-2020 02:49 AM
08-05-2020 04:56 AM
Hello Ppreenja,
Thank you very much for your time and your explanation.
Regards!
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