How can I tell which list a sender's IP got blocked by?

[magicspam]

You can find this out by looking at your logs - either via the 'view last 50 logs' link, log search, or by reviewing the logs in /var/log/magicspam.

You should see a line similar to...

SPAM[block_lists:13,36,6]

How do you find out which lists those numbers represent? MagicSpam uses the BMS (BLacklist Mastering System) by LinuxMagic to do it's fast and efficient testing, and you can use their lookup tool on their website.

http://www.linuxmagic.com/products/bms/lookup

Alternatively, you can also review the numbers listed in the log against the MagicSpam interface "Block Lists" tab.