Situation: you need to bounce some messages from one user to another or to a mailing list.
Criteria: the sender should be real and without changes on the message

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aptitude install mutt

…if not installed.

Open your Maildir with mutt:

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mutt -f /home/info/Maildir/

Tag messages with: t

Bounce tagged messages with: ;b
Now enter a address of recipient and accept the bounce process with yes