Fixed - The DE SMTP IP is no longer on the Proofpoint blacklist. (21:35 UTC — Mar 15)
Watching - We’re still waiting on Proofpoint to delist the DE SMTP IP address. (17:17 UTC — Mar 15)
One of the Opalstack DE SMTP IP addresses is currently on the Proofpoint blacklist. We’re working to have the IP de-listed and expect this to be complete within the next 24-48 hours. (21:19 UTC — Mar 12)