How to handle non-existent users in qmail-toaster I have created a virtual domain goldenswan.com, all mail to
 

Hello,

I have configured a Qmail toaster mail server for my office. A virtual domain
i.e. goldenswan.com is created for my LAN users. Each email account looks
like something@goldenswan.com. I have created user1@goldenswan.com,
user2@goldenswan.com on this local email server. When I send a message to user1@goldenswan.com or user2@goldenswan.com it is perfectly delivered to the respective mail boxes. If I send
a message to non-existent user (lets say user3@goldenswan.com) on local mail server, message is bounced back.

My internet domain is also goldenswan.com which is placed to some ISP. I want
to deliver non-existent user's mail (mentioned above as user3@goldenswan.com) should be delivered to ISP's goldenswan.com mail server by resolving MX record of actual goldenswan.com.

Regards,
Pushpraj