Hi Kris, Am Montag, den 08.05.2017, 11:13 -0400 schrieb Kris Deugau: > if ($hashfile{$fromaddr}) { > action_add_header("SpecialHeader", "$fromaddr found in list"); > } > Ah, good idea. Thanks! But if I just add this to filter_end action_add_header("X-SpecialHeader", "$fromAddr test"); to read out $fromAddr, the variable is empty in my case. Ciao!