Hello!
Few days ago some mail servers started to block our messages - senders in my organization are receiving NDRs referencing to spamcop, including link: https://www.spamcop.net/bl.shtml?OUR_MAIL_SERVER_IP_ADDRESS
I have visited spamcop site and check our mail server IP address - the result is: OUR_MAIL_SERVER_IP_ADDRESS not listed in bl.spamcop.net
Now i am confused - messages are rejected and ip address is not on BL.
How to proceed?
Thank you in advance for any idea!