Mutt, Exim4, Debian, Ubuntu and BCC. FAIL [fix included].
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! More here
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I tried the solution offered in the article. Exim4 hands me a bounce:
“A message that you sent using the -t command line option contained no addresses that were not also on the command line, and were therefore suppressed. This left no recipient addresses, and so no delivery could be attempted.”
Debian Lenny, AMD64. The file “/etc/exim4/conf.d/main/01_local_bcc” did not exist prior to trying it. I can find no extract_addresses_remove_arguments in any of the other files. I have reloaded exim.
I note Gkrellm’s mail handling is somewhat broken too.