On man 09 aug 2010 12:42:11 CEST, Charles Marcus wrote > So, either Thunderbird is automagically combining the multiple > References header lines into one, or your amavisd-new is mangling > them... or...? last site i see it on was mail.ims.co.at maybe not thunderbirds fault, but in all cases thunderbird was used in the quarantined mails here -- xpoint