I too have seen these, Use the following rule, it works for me:
header __FVGT_h_XNUMBER0 ALL =~ /x-transfer-number/
header __FVGT_h_XNUMBER1 ALL =~ /X-transfer-number/
header __FVGT_h_XNUMBER2 ALL =~ /X-TRANSFER-NUMBER/
header __FVGT_h_XSTAMP0 ALL =~ /x-transfer-stamp/
header __FVGT_h_XSTAMP1
Our site has just received a spam with approx 19kb of headers of the form
shown at the end.
The message gets marked as spam but the MUA (tested outlook and Eudora)
fails to filter based on the mark (presumably it gives up scaning the
headers before reaching my spam flag at the end). Clearly s
