marketo.smartsheet.com is in the spam RBL list

Received this alert from our spam filter:

Rejection Description:

IP Found in RBL

Event Time:

2022/05/12 at 13:19:23

Rejection Information:

spamcop.mimecast.org Blocked - see https://www.spamcop.net/bl.shtml?199.15.212.139

From:

464-onm-149.0.964529.0.0.61078.9.256108440@marketo.smartsheet.com

To Address (Pre Checks):

-


To Address (Post Checks):

-


IP Address:

199.15.212.139

Remote Server Name:

marketo.smartsheet.com

Server Greeting (EHLO):

marketo.smartsheet.com

Answers