Hi tty2k7/winkelstore.com,
If you send an email to your custom domain related email aliase from an address other than the one it is configured to forward to, the message will be delivered to the specified account.
If you would like a member of our support team to assist with your testing by sending you a test email, please file a support request using the appropriate link on our help page:
http://www.auctiva.com/free_auction_software_help/help.aspx-Mike