That is strange. Do you have a copy of that file? Is it identical to [1]? What exact SA codebase is this; linux-distribution package, CPAN, other?
> Feb 5 14:19:46.438 [6998] warn: (Global symbol "$Blat" requires > explicit package name (did you forget to declare "my $Blat"?) at > /etc/spamassassin/70_zmi_german.cf, rule __ZMIfish_ForgedBill01, line 1.) [1] http://zmi.at/x/70_zmi_german.cf