qmailmrtg7 utilizes qmail and tcpserver/multilog's 
extensive logging capabilities to create mrtg graphs. 
It efficiently processes the logs (large sites with 
historical logs of over 100MB can be processed in a few seconds). 

For qmail it graphs remote/local delivery concurrency, 
queue size, messages process, bytes transferred, 
and success/failure delivery status. 
For POP and SMTP it graphs total connections and concurrency.
