Take a default Ubuntu/Debian install using the Mutt mail client (MUA) then switch to exim4.
You get the most monumental FAIL - your bcc addresses will be included in the message to everyone else. Dangerous and embarrassing!
Happily there is a fix, but it seems insane that you should even need it. Read on for details.
Continue reading Mutt, Exim4, Debian, Unbuntu and BCC. FAIL [fix included]..
