Problems Spamcop - Microsoft office 365 in SpamCop Blocklist Help Posted July 13, 2016 Hi all, I need your help, in our company we have problems with some emails, we have office 365, sending some emails, these are returned by being blacklisted by SpamCop, copy the error message: Quote cp.mediainteractive.cl rechazó tus mensajes a las siguientes direcciones de correo: El mensaje no se pudo entregar porque se sospecha que es correo no deseado. Para obtener información sobre procedimientos recomendados al enviar correos electrónicos, consulte las instrucciones que se encuentran aquí: http://go.microsoft.com/fwlink/?LinkID=526654. cp.mediainteractive.cl produjo este error: Decision Engine classified the mail item was rejected because of IP Block (from outbound normal IP pools) -> 550 "JunkMail rejected - mail-bl2nam02hn0218.outbound.protection.outlook.com;(NAM02-BL2-obe.outbound.protection.outlook.com) [220.127.116.11]:37024 is in;an RBL, see Blocked - see http://www.spamcop.net/bl.shtml?18.104.22.168" to call microsoft, they tell me I must speak with businesses to let us as whitelisted, but we're going out for a spool of ips that Microsoft handles .. you as spamcop, can leave our pollachilena.cl domain as safe and reliable? .. well I copy them microsoft's response: Quote "During our phone conversation and remote session we found that blocking emails is random, but always blocks is www.spamcop.net who, despite being from different domains recipients. We found that the prinicipal block occurs when outgoing emails are being sent through the High Risk Pool. But also emails that have not gone through that pool are blocked. We suggest you contact support www.spamcop.net, to add their domain as safe senders. " grateful. regards!