Those are X headers. I would guess disarmed means "rendered safe" - perhaps dodgy URLs and HTML content has been removed?
Spampal example:
Code:
X-RegEx-Score: 307.1
X-RegEx: [200.0] MULTIPLE NTL RECIPIENTS
X-RegEx: [59.6] FROM_AND_RECEIVED_DO_NOT_MATCH FQDN in From and Received header do not match
X-RegEx: [47.3] VERY_SUSP_RECIPS Very similar addresses in recipient list
X-RegEx: [50.0] SIMILAR_CC: similar domains in 'Cc:'
X-RegEx: [-49.8] USER_AGENT_MOZILLA_UA User-Agent header indicates a non-spam MUA (Mozilla)
X-RegEx: [0.0] X_ACCEPT_LANG Has a X-Accept-Language header
X-SpamPal: SPAM COUNTRY 80.102.166.60