Local Good Senders IP receives Connection Classification static spam attack verdict.
Article ID: 221865
Updated On:
Products
Issue/Introduction
Local Good Senders IP receives Connection Classification static spam attack verdict.
Environment
SMG 10.7.4.X , 10.8.X, 10.9.X
Resolution
When IP address is in the Local Good Senders, it is automatically assigned to Connection Class 1. The default connection limits for Connection Class 1 are:
- 200 maximum connections per IP.
- 34.4% of total allowed connections for this pool.
- unlimited messages per connection.
- 0% connections deferred automatically.
- No reconnect timeout.
If the new connection violates any of these restrictions, the connection then receives a 'spam attack' verdict. The only two elements where there is a limit is number of connections per IP, and total connections allowed for class 1.
In the default MTA configuration with 2000 total connections available to the inbound MTA listener, the default limit on connections for Connection Class 1 is 688 (34% of 2000).
If there are 688 active connections from IPs in Connection Class 1, then a new connection from an IP in Connection Class 1 would be deferred.
It is not recommend to modify the default connection class configuration or the total number of connections allowed for the MTA. These values are tuned to provide optimal performance of the Messaging Gateway systems in most environments.
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