[Spambayes] empty "subject " and "from" fields

[Adriaan Klop]

Hi,
I am a first time user.
Since using SpamBayes POP3 proxy version 1.1a1 my Outlook Express mails 
arrive in my inbox without Subject (in French: Objet) and From (in French: 
De) fields - those fields are now blank. (Spam filtering is OK).
What could be the problem?
regards,
Adriaan