Is there any key to contacting Proofpoint or Cloudmark concerning an IP being blacklisted? I am not a Proofpoint or Cloudmark customer. But I do run a mail server, users are unable to send messages to Comcast and other addresses because the IP is being blocked by Cloudmark.
The IP is not on any other blacklists. The IP has proper FCrDNS setup.
I've filled out the form at Cloudmark multiple times, but I'm getting no response and the IP continues to be blocked by Cloudmark.
I know Proofpoint bought Cloudmark some years ago – but I gather that they run two independent blacklists. The IP is not listed with Proofpoint, just on Cloudmark.
I'm beyond frustrated that I'm getting no response from Cloudmark.
Source: r/proofpoint · by /u/muttick