> When my MimeDefang/Spamassassin system tags a message as spam, it adds > the Spamassassin report as an attachment to the original message. > > Can somebody confirm for me that it would be a BAD idea to feed these MD > modified messages to sa-learn?
No, it wouldn't be a bad idea. SA knows how to remove its own markup. Where you get into trouble is when you forward a spam to a mailbox to feed to SA. SA won't know to remove the last forwarding step in the spam.