[SAtalk] Confused about sa-learn and auto_learn

I'm a little confused about training with sa-learn, when auto_learn is enabled by default. Given that auto_learn is working, is it still worthwhile to run true-positives (spam) and true-negatives (hams) through sa-learn, as the INSTALL document says you should do? Or instead is it only us

[SAtalk] FORGED_MUA_AOL and AOL employees

I've been exchanging mail with an actual employee of AOL, and his messages are always tagged as spam because they fail the FORGED_MUA_AOL filter. Obviously, he's a little upset about this! Is there something he could be doing differently, or is SpamAssassin simply not going to discern between F