This is for those who combine Spamassassin, Exim and Debian-spamd, and
wish to fix those nonexistent spamassassin user_prefs: "No such file or
directory" errors and others.
For others who see these error messages in /var/log/mail.log:
,----
| config: cannot create user preferences file /nonexistent/.spamassassin/user_prefs: No such
| file or directory
`----
,----
| spamd[1305]: bayes: cannot open bayes databases /var/lib/spamassassin/bayes_* R/O: tie
| failed: Permission denied
`----
,----
| pyzor: internal error, python traceback seen in response: Traceback (most recent call last):
`----
This means you need to check your exim4.conf. You might still have this
in your acl section
,----
| spam = nobody
`----
if you replace this by (something like):
,----
| spam = debian-spamd
`----
and restart exim4, those errors will likely be gone. Instead you'll see:
,----
| spamd: setuid to debian-spamd succeeded
`----
