Problem with mail

What can I do to fix this problem?



if you do so, please include this problem report. You can
delete your own text from the attached returned message.

The mail system

<leorjamaral@hotmail.com>: host
hotmail-com.olc.protection.outlook.com[104.47.44.33] said: 550 5.7.1
Unfortunately, messages from [xx.xx.xx.11] 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.
[SN1NAM04FT027.eop-NAM04.prod.protection.outlook.com] (in reply to MAIL
FROM command)



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and this??

####################################################################
# THIS IS A WARNING ONLY. YOU DO NOT NEED TO RESEND YOUR MESSAGE. #
####################################################################

Your message could not be delivered for more than 4 hour(s).
It will be retried until it is 5 day(s) old.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

The mail system

<usuario@uol.com.br>: host mx.uol.com.br[200.147.36.15] said: 450 4.7.1
Client host rejected: cannot find your hostname, [xx.xx.xx.11] (in reply
to RCPT TO command)


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My host  response
It seems like servidor.xxxxx.xxx is not resolving to xx.xx.xxx.11, As advised yesterday, you need to login to Cloudflare and create the A records.


But i use freeDNS?
How can i do this?

Can someone help me?

First part, blacklisting has nothing to do with CWP. That's because part of the network where your ip is hosted (same hosting/service provider) is on Hotmail's block/black list.

If your IP wasn't used for spam you can manually fill this online form to delist just your server IP address: https://support.live.com/eform.aspx?productKey=edfsmsbl3&ct=eformts&wa=wsignin1.0
Otherwise you have to contact your hosting/service provider and paste them this mail response you've got.


Second part, you have to set server hostname, it has to be a subdomain. Then rebuild mail server.
Be sure your subdomain is pointed to server IP address directly using A record on Cloudflare, you can't use Cloudflare Proxy for this, that orange cloud has to be gray for this subdomain. So your IP address has to be exposed by hostname (subdomain used for hostname), hostname can't be behind proxy.

i'm using freeDNS, its a problem?

1 year has passed, and failed to solve this problem