Exim, refused: too many connections

One of our mailserver having problem last week. It’s caused by the massive connections connected into the server sending out newsletter(large database unstoppable loops) from one host.

2006-06-15 08:50:06 Connection from [201.xx.xx.xx] refused: too many connections
2006-06-15 08:50:20 Connection from [201.xx.xx.xx] refused: too many connections
2006-06-15 08:50:24 Connection from [201.xx.xx.xx] refused: too many connections
2006-06-15 08:50:28 Connection from [201.xx.xx.xx] refused: too many connections
2006-06-15 08:50:32 Connection from [201.xx.xx.xx] refused: too many connections

Exim default allow maximum 20 connections from a host. You can increase the connection in the main configuration file by adding in this line;

smtp_accept_max = 50

For more information, visit Exim’s documentation site.