securing qmail for open relay

[ebudihar]

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.

 

[Ragefast]

The closed relay means your server will only accept messages to local accounts. If you intend to use your server to send mail to the outside world, then you *must* use the 'authorization is required' option. That way only authenticated users can send messages thru it, and it isn't an open relay.

Maybe you should give Plesk's documentation a go, theres some nice hints for an initial setup:
http://download1.swsoft.com/Plesk/Plesk8.6/Doc/en-US/plesk-8.6-unix-administrators-guide/index.htm

If your problem is spam, you're messing with incorrect settings. Try a search in the other forums and it will render you useful posts on how to harden your server against spam.