I've put my blacklists n the local.cf file.
. What is the reaction when SA finds a blacklisted domain in a header ?. he automatically upgrades the hits by 5 ? 10 ?.
by blacklist do you mean one matching blacklist_from? If so, it automaticaly adds 100 points, and will show up as matching the rule "USER_IN_BLACKLIST".
If you mean a DNS RBL or RHSBL (ie: sbl, njabl, sorbs, spamcop, etc), those all show up as their own rules, and have scores that were assigned by the mass-check process. These show up as rules that have names starting with "RCVD_IN_", and scores seem to go up to 3.805 in SA 3.x.