Im running logwatch on red hat 7 it sends mails using firstname.lastname@example.org however, the email from localhost.localdomain is not received at the recipient because localhost.localdomain is not registered. I want to change logwatch or mail to send from for example email@example.com instead of firstname.lastname@example.org. Can anyone help me? I have already tried changing logwatch.conf with MailFrom = email@example.com but did not work. Logwatch is using mail (not sendmail) .