Refer the link for how to create Autoresponder

The video in the link   shows  the details for creating backup

see the visualization in the link   its fully about  creating database

Its really a useful video about mail forwarding  just see this using 

You can use our SMTP & POP3 IP in your outlook express and also you should enable My server requires authentication in your outlook express -...

The link   show the full details of mail alias

The link  have a video about write permission . It will solve your issue

By creating custom buttons you can assign a task for this button . For further refence refer 

Refer the below link for Creating domain alias

Gothrough the link