I used the WebTrends Logfile Analysis Suite. It works freat for me with HTTP logs maybe you can use it for your SMTP logs, i didn't try it myself yet. http://www.webtrends.com.
I used the WebTrends Logfile Analysis Suite. It works freat for me with HTTP logs maybe you can use it for your SMTP logs, i didn't try it myself yet. http://www.webtrends.com.