Change the “From:” address in Unix “mail”

Question

Sending a message from the Unix command line using mail TO_ADDR results in an email from $USER@$HOSTNAME. Is there a way to change the \"From:\" ad

Answer 1

I don't know if it's the same with other OS, but in OpenBSD, the mail command has this syntax:

mail to-addr ... -sendmail-options ...

sendmail has -f option where you indicate the email address for the FROM: field. The following command works for me.

mail recepient@example.com -f from@example.com