pls bear with me as i'm very new at this, and posting this solely because I have tried searching here as well as google but cant seem to get an answer.
am using qmail and have webmin, all is running smoothly, but i have users spamming other staff accounts.
The question: How do I block a user from sending out mails but still able to receive mails. Just denying access to sending mails?
Would greatly appreciate if anyone can guide me to do it via terminal as well as webmin.
Why webmin you ask, because I have tried it once it works but sadly it block both incoming and outgoing mails.