Right now,
I am looking for a way how to secure qmail from open relay and still sending and receiving without someone use my mail server to send any spams emails. What I have in the plesk 8.6 is just server>Mail>Relaying (closed, authorization is required: POP3 or SMTP). When I choose "closed", the mail server is totally closed relay and I cannot send any emails and sometimes I cannot receive emails. But if I choose the other, my email server will be open relay and someone can use it to send spams.
I think you should add a feature how to configure the qmail as a closed relay and I will have no problem in sending and receiving.
I am looking for a way how to secure qmail from open relay and still sending and receiving without someone use my mail server to send any spams emails. What I have in the plesk 8.6 is just server>Mail>Relaying (closed, authorization is required: POP3 or SMTP). When I choose "closed", the mail server is totally closed relay and I cannot send any emails and sometimes I cannot receive emails. But if I choose the other, my email server will be open relay and someone can use it to send spams.
I think you should add a feature how to configure the qmail as a closed relay and I will have no problem in sending and receiving.