Hello, it looks something changed in mimeheader check. After upgrade to 3.4.3 this rule throws error:
warn: config: SpamAssassin failed to parse line, "__LRM_BAD_ZIPSRULE Content-Type:raw =~ /^application\/zip;.*xls\s\.zip|^application/zip;.*\.zip\"/" is not valid for "mimeheader", skipping: mimeheader __LRM_BAD_ZIPSRULE Content-Type:raw =~ /^application\/zip;.*xls\s\.zip|^application/zip;.*\.zip\"/ What changed in the way how mimeheader works? Marcin