Forward domain emails to another include new subdomains

Hi, I found a problem to forward all emails comes to a domain (ex. domain2.com) to another (ex. domain1.com) include all new subdomain created in domain1.com Here what I have done, I have email user1@domain1.com And I already add a domain email forwarder (mail/fwds.html) : domain2.com to domain1.com So if I send email to user1@domain2.com it will forwarded to user1@domain1.com 's mailbox So far there's no problem now I made a subdomain named project.domain1.com and I made email user2@project.domain1.com PROCESS XXX { I made same subfolder for domain2.com : project.domain2.com and add a domain email forwarder (mail/fwds.html) : project.domain2.com to projects.domain1.com } So if I send email to user2@project.domain2.com it will forwarded to user2@project.domain1.com 's mailbox there is no problem till now. The question is, Can we automate 2 process between PROCESS XXX bracket (add subdomain and add domain email forwarder ? all I want is just Add new sub domain in domain1.com (ex. newsubdomain.domain1.com) and add new email address user3@newsubdomain.domain1.com and if I send email to user3@newsubdomain.domain2.com, the email will automatically send to user3@newsubdomain.domain1.com 's mailbox Hope there's solution for helping this process..... because my client quite often create new subdomains and create email account for users inside its subdomain. Thank you for helping me....