different spamassassin behaviours

[Gabriele Bulfon]

Hi,
I have some installation of amavis+postfix, where I discovered that some spam is coming in with a very low score, but if I run spamassassin in debug mode on the same emails they get a very high score.
On my installations, amavisd runs under the "snclamav" user, while the smtp-amavis postfix daemons run under the "snclmail" user.
I run the bayes learn using the snclamav user, and also run spamassassin debug mode using the same user, that stores the bayes database in a specific path.
Any idea what may happen in amavisd spawn spamassassin that does not happen in manual debug mode?
Thanks for any help
Gabriele
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