Hello!

I use Zoho to manage my e-mails of my domain.

When I send e-mails to some specific addresses (two, from the same domain) , I'm getting this error message:

 

"JunkMail rejected - sender-of-o53.zoho.com [135.84.80.218]:21782 is in an RBL: Listed in ZapBL, see https://zapbl.net/lookup?135.84.80.218".

When I click the link and ask to de-list, the website says I have to pay. That looks like a scam to me!

After this problem started (this monday), I've re-configured the MX Records, SPF, DKIM and DMARC. 24 hours later, the problem is still there.

What can I do to solve this problem? Can you get it delisted, or change the IP I'm using?

Thanks,

Iande