Emails from Zoho are getting blocked due to Zoho IP address being blacklisted

Emails from Zoho are getting blocked due to Zoho IP address being blacklisted

This is the info I got from my hosting provider – please address this issue immediately. I don’t expect this from such a big household name. Every single invoice I have sernt it not being received by my clients, all being blocked. All of a sudden. 

As per my previous response, emails from Zoho are getting blocked due to their IP, which is currently blacklisted:

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2026-02-25 11:48:09 H=bmail-165.transmail.net [135.84.80.165]:33940 X=TLS1.3:TLS_AES_256_GCM_SHA384:256 F=<sender+c75f1950-122e-11f1-afac-963d1902c9da_vt1@sender.zohoinvoice.com> rejected RCPT <email address>: "JunkMail rejected - bmail-165.transmail.net [135.84.80.165]:33940 is in an RBL (SpamCop:127.0.0.2): Blocked - see https://www.spamcop.net/bl.shtml?135.84.80.165"
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The reputation of a sender’s IP address is the responsibility of the sending provider. They are required to monitor their IP reputation, request delistings when necessary, and manage their mail infrastructure (including rotating or replacing IPs that become blacklisted).

A blacklist listing typically indicates that spam or spam-like traffic was detected from that IP address. This is something the sending provider must investigate and resolve to ensure reliable email delivery.

In this case, it would be best to contact Zoho Corporation and inform them that their sending IP 135.84.80.165 is currently blacklisted, so they can take the appropriate corrective action.