Over the weekend one of my clients suffered an authenticated user attack on the SMTP interface of the Exchange 2003 server. This was detected by the monitoring tool I use, HoundDog, now GFI MAX. Read the rest of the article.
Very interesting article and a list of user names that this MVP has seen used for spamming. Also a brief explanation of how he successfully used HoundDog Software to keep on top of this and head-off a growing problem before it became a real problem.