Date:  2026 3 Feb 11:30 AM ET US / 16:30 GMT

Problem:  cloud-out-d.spamtitan.com, IP address 34.194.51.1 was being blocked by zen.spamhaus.org starting around on on February 3, at 1PM GMT / 8 AM US ET

We became aware that one of the IPs associated with cloud-out-d.spamtitan.com was being blocked by zen.spamhaus.org

at around 10:30 AM ET US, we removed 34.194.51.1 from the outbound IP rotation, while we process the <delist request> spam SpamHaus

We apologize for the inconvenience. We will be posting updates here.


Update:   2026 3 Feb 12:30 PM ET US 
Delist of that IP address is still in progress, IP 34.194.51.1 is still excluded from the rotation.

Update:   2026 3 Feb 2:00 PM ET US 
Delist of that IP address is still in progress, and IP 34.194.51.1 is still excluded from the rotation.

Update:   2026 3 Feb 5:05 PM ET US 
No change. Delist of that IP address is still in progress, and 34.194.51.1 is still excluded from the rotation.