Chris,

When a message is force-delivered from the quarantine to the end-user, it will be removed from the quarantine database by SpamFilter's clean up routines (the same that delete messages that pass the retension period). Could the messages you saw disappear fall in this category?

Once a message is removed from the quarantine, it cannot be retrieved unless you have a backup for the database.

If you can explain a bit more in detail what version of SpamFilter and what database platform you're using, along with more info on what exactly you mean by "locks up" we can try to help further on that issue.

Roberto F. LogSat Software

SpamFilter will run on all versions of Windows from NT4 and up, including XP Pro. Providing hardware requirements is a difficult question since it depends on traffic and server hardware. SpamFilter has a very small memory footprint and requires very little resources when compared to other products. As a comparison, a "medium" size company that receives about 10,000 emails per day can install SpamFilter on low end server with a 400MHz Pentium and only 384MB of RAM. Under those conditions SpamFilter uses on average 20% CPU and 30-100MB of RAM. An example of such installation is our own ISP. The numbers we just provided are relative to our own production server. When we perform internal stress tests we "hit" SpamFilter with 100-200 concurrent connections, each sending random emails between 2K-15K in size. Our test platform is a 2GHz machine with 1GB of RAM, and is able to handle that traffic without problems. The biggest customer we know of receives about 1 million emails per server, but unfortunately we do not have his server specs. Roberto F. LogSat Software