Q0716

Q0716

Question

How can I arrange for each user to have a file listing the only sender addresses from which she will accept mail? I want to do this so my family members don't get any spam (or other inappropriate mail).

Answer

Let's assume each user has a file called .acceptlist in the home directory. You can put in your ACL a line like this:

require senders = /home/$local_part/.acceptlist

This will reject RCPT commands when the sender is not in the accept list for the recipient. (Replace /home/$local_part with whatever the correct path to your user's home directories is.) One problem with this is that it will block bounce messages, which have empty senders. You can get round this, by changing the line to this:

require senders =  : /home/$local_part/.acceptlist

However, this will, of course, let in spam that has a null sender.

---