For the most part, I got ISBG working as expected, however, I am seeing
some emails that was marked as SPAM not getting moved to the SPAM folder.
The instructions that I found added this to the spamassassin config:
> # Add *****SPAM***** to the Subject header of spam e-mails
> rewrite_header Subject *****SPAM*****
> report_contact isbg(a)SpamPi.net
> report_hostname SpamPi.net
For the most part, this works. I see the spam marked and moved over to the
spam folder, but occasionally, I see something marked *****SPAM***** in
the inbox. Is there a reason why they don't get moved to the SPAM folder?