Proofpoint blocking AWS SES shared IP addresses

Question

We're using the SES shared IP address pool.

Since ~ 10 pm (Pacific) Friday, it seems that email service provider Proofpoint is blocking at least 2 of the SES shared IPs, 54.240.27.52 and 54.240.27.27, rejecting all SES email with "554 Blocked - see Blocked - see https://ipcheck.proofpoint.com/?ip=[ipaddr]"

The SES documentation says that AWS manages the reputation of the shared IP addresses. How do we escalate this issue to AWS so AWS can either remove the Proofpoint blocked IP addresses from use and/or reach out to Proofpoint? Outside of purchasing dedicated IP addresses, any solutions?

Answer

Apart from the solutions you have indicated
Proofpoint provides a self-service portal for email senders to request delisting from their blocklist. You can visit the Proofpoint IP and Domain Reputation Center at [https://ipcheck.proofpoint.com/ ]()to request delisting for your SES IP address. However, it is important to note that this process may take some time, and there is no guarantee that your request will be approved.

Answer

The challenge with the dedicated SES pool is that other users might be impacting your SES operation.

It is highly recommended to have at least 2 dedicated IP addresses setup for SES with proper SPF and DKIM records to avoid being impacted by other users of a shared pool.

AWS does a very good job monitoring reputation but due to the short lifed nature of systems sending SPAM this can not always be detected fast enough.

Proofpoint blocking AWS SES shared IP addresses

Relevant content