SpamAssassin content limit issue?

Since the removal of SPF in Exim en relying on SpamAssassin, i've noticed a bug. Some e-mails were never analyzed by SpamAssassin and went straight into the inbox without Spam notification. So what happened: 1. a 1.9 MB acquisition fraud e-mail with invoice PDF by "info62@example.com" received from an *.outlook.com server 2. the SPF failed (they now have that fixed) 3. SpamAssassin never analyzed the e-mail due to the 200kb content limit 4. e-mail placed in inbox without X-Spam headers Ok, we can't stop Microsoft from allowing to send spam, but we should be able to improve SpamAssassin. I've now set SpamAssassin to analyze 2000kb, is that better?