pmg 8.1.4

Hello, on my pmg (8.1.4) i won´t get dnsbl working on incoming emails. I need some hints please to figure out where it´s lagging. I a sure i have forgotten something but no idea where. When i toggle the Spam Info - from a Mail in Quarantine - i got following results: RCVD_IN_DNSWL_BLOCKED -->...

Hi, We have PMG cluster with 17 nodes. Nodes 1 - Nodes 4 are for receiving mail and and the rest are for sending. In recent days, users who send us emails have been receiving a error all server ports busy. We have 24654 domains in the cluster. I would be grateful for any advice. We have...