ERROR CODE :550 - "JunkMail rejected

ERROR CODE :550 - "JunkMail rejected

Hi, I have 2 days with this error



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adoax@mushteri.com.mx, ERROR CODE :550 - "JunkMail rejected - sender3-op-o18.zoho.com [136.143.184.18]:17825 is in
            an RBL: Error: open resolver; https://www.spamhaus.org/returnc/pub/172.71.165.210"



Someone can help me please

Thanks