Hotmail is blocking the zoho mail IP
Greetings,
Since last Tuesday (5 days
ago today) I wrote to Zoho support and I still haven't received a
single response (Ticket ID: 2056917). Is this how you treat people who
pay for your email service?
I am making this public so that those who want to hire you know what they might encounter.
Details:
Since
last week I have been receiving returned emails destined for Hotmail
with ERROR CODE: 550 - 5.7.1, from ZOHO's IP: 136.143.169.14
Attached text:
- [REDACTED]@hotmail.com,
ERROR CODE :550 - 5.7.1 Unfortunately, messages from [136.143.169.14]
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. [Name=Protocol Filter Agent][AGT=PFA][MxId=11BC484F72964D3A]
[BN1PEPF00004680.namprd03.prod.outlook.com 2025-11-18T19:10:54.434Z
08DE2427BC57428B]
Reporting-MTA: dns; mx.zohomail.eu
Arrival-Date: Tue, 18 Nov 2025 19:10:49 +0000
Original-Recipient: rfc822; [REDACTED]@hotmail.com
Final-Recipient: rfc822; [REDACTED]@hotmail.com
Status: 550
Action: failed
Last-Attempt-Date: 18 Nov 2025 19:10:54 GMT
Diagnostic-Code: 5.7.1 Unfortunately, messages from [136.143.169.14] 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. [Name=Protocol Filter Agent][AGT=PFA][MxId=11BC484F72964D3A] [BN1PEPF00004680.namprd03.prod.outlook.com 2025-11-18T19:10:54.434Z 08DE2427BC57428B]
Remote-MTA: dns; hotmail-com.olc.protection.outlook.com
Please,
since you don't even bother responding to the people who pay you for
email service, try to remove that IP from Microsoft's list, not just for
me but for the other users as well.
Regards
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