On Tue, 15 Aug 2017 07:55:39 -0700 (MST) Scott wrote: > Hmmm. Doesn't sound good. I sent a simple text message through a > large ISP, to my server, arrived in a mbox. Compared that message to > the one that was POPed, then sent back as an attachment and stripped > out via the existing script. > > These sanitized messages are pretty short but I put in pastebin: > https://pastebin.com/b38RXHgx > > When looking in Outlook the headers all appear intact, but forwarding > as an attachment appears to strip these: > Delivered-To: > All X- headers added by my SA > All X- headers added by sending ISP (X-Yahoo*) > Authentication results and DKIM signature > Status: R > > Otherwise the rest of the headers were unaffected. > > I'm not sure how bad that stripping of X-headers, DKIM, etc screws up > bayes learning?. Doesnt' SEEM that bad,
It should be OK, but it wouldn't be ideal to combine it with autotraining because the manual training wont be able to counter any mistraining of the tokens from the stripped headers. It would probably be a good idea to use a comprehensive ignoreheader list. You could start with AXB's: https://svn.apache.org/viewvc/spamassassin/trunk/rulesrc/sandbox/axb/23_bayes_ignore_header.cf?view=co
