Well, here's a development...
About the only difference in my old, functioning box and this new "clean"
install was the location of the bayes files.
The other details that caught my attention were that on the old box, the
ONLY bayes thing that was explicitly set was the path, which was:
On this (new) box, I commented out most of the bayes settings similarly.
Restarted amavis/SA and got some errors about no bayes db. Ignored.
Sent an email anyway. Guess what? autolearn=ham right out of the gate, it
and created the database files.
And the very next message received was also shown as autolearn=ham.
** that eliminates any doubt that a minimum corpus is necessary to autolearn
(whether that's a good practice is a different topic).
I cleared the db's with sa-learn --clear. I received a new message,
autolearn=ham, again. Result:
[root@mail2 .spamassassin]# su amavis -c 'sa-learn --dump magic'
0.000 0 3 0 non-token data: bayes db version
0.000 0 0 0 non-token data: nspam
0.000 0 1 0 non-token data: nham
[root@mail2 root]# ll /var/spool/amavisd/.spamassassin
-rw-rw-rw- 1 amavis amavis 12288 Aug 10 21:20 bayes_seen
-rw-rw-rw- 1 amavis amavis 12288 Aug 10 21:20 bayes_toks
-rw-r--r-- 1 amavis amavis 1869 Aug 8 15:32 user_prefs
I gradually restored all the bayes settings in local.cf, restarting amavis
each time, clearing the db and sending that same test message.
Each time the result was autolearn=ham
Finally to the path setting:
I tried setting the default path, and changing the path filename suffix of
bayes to mybayes for curiosity...
Upon sending a test message, SA promptly auto-learned as ham and created the
2 new files starting with "mybayes" instead of bayes.
So changing the filename didn't hurt autolearn
Next I kept the new name and changed the folder back to where it was:
Send a test message
This time, NO new file was created. It apparently cannot write to it.
Permissions on mail, and on bayes are both amavis:amavis & 777.
**** autolearn=unavailable **** (As Matus expected)
Next, I log on as amavis. cd to /etc/mail/bayes. Create a file, edit it,
and then delete it. User amavis CAN write there. I verify I'm amavis, Try
to cd to some other user's folder, get "permission denied", check.
Finally, because I don't like the hidden directory anyway, I try to move the
bayes folder from the default. I configure the bayes path to:
Send my test message, voila, db files created, and autolearn=ham Success!
(tentative, cautiously optimistic)
I hope I have solved the mystery. For reasons beyond my skill set, SA will
not auto-learn to a bayes db in a folder in /etc/mail/bayes. Regardless of
wide open permissions on everything except /etc. And the user's confirmed
ability to write to the folder.
Bug I guess?
SHIT! What a PITA to figure out.
I'm gonna let this cook overnight and see how it does. Will report back.
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