[Djigzo users] [OT] Invalid signature because of "Content-Transfer-Encoding: 8bit"

lst_hoe02 at kwsoft.de lst_hoe02 at kwsoft.de
Wed Apr 20 15:23:56 CEST 2011


Hello

today i got a mail fro a well known German Trustcenter with a invalid  
signature warning (content altered). A former mail to an other account  
from the same Trustcenter was valid. On inspection it looks like  
someone altered the encoding because the valid mail has  
"Content-Transfer-Encoding: 8bit" and the broken one  
"Content-Transfer-Encoding: quoted-printable". As far as i know a SMTP  
server should only pass 8bit if the remote site announces 8BITMIME, so  
i suspect this is the trouble maker because neither Djigzo nor our  
Virus scan announces 8BITMIME :-(

Any comments on this?

Regards

Andreas


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