Our Sugar Enterprise system stopped sending emails on Wednesday - both scheduled reports and BPM emails. I was slow digging into it, and it wasn't until today that we determined that our email provider (Rackspace) was rejecting the log-on from our SugarCRM system.
We just confirmed with them that they have blocked the IP 126.96.36.199 which is used for On-demand Sugar installations. The block is for seven days and started 8/31/2021
I've temporarily switched to another email provider for our system