On 18 Nov 2020, at 9:44, Dean Carpenter wrote:
Greetings -
I'm finalizing my ansible playbook for building up a nice mail system
with all the goodies, with spamassassin being very central to it all.
I
have a test server set up in Azure that I run tests with using swaks
(great tool). I push both ham and spam to it, with and without the old
system spamassassin markup.
The spamassassin on the test box is only trained with my current Inbox
(3k) and spam (13k) folders, not yet with Trash (15k non-spam) or
older
Inbox (5k).
I just noticed a few rules that are firing, but have zero value, and
they seem like fairly important rules ... For example, this is a spam
with no markup, where NO_DNS_FOR_FROM and SPF_NONE have zero.
Scores in the rule-per-line report are truncated to a single decimal
place. Those rules have trivial non-zero scores to assure that they get
checked but they are not in themselves very meaningful. For example,
NO_DNS_FOR_FROM should probably never hit in SA, because any
well-configured MTA will reject that before the SMTP DATA phase.
SPF_NONE is also not a useful rule on its own but it may be of interest
for developing meta rules. Both of those are DNS-based so they are more
likely to hit when running an old mail corpus rather than live mail.
--
Bill Cole
b...@scconsult.com or billc...@apache.org
(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
Not Currently Available For Hire
