Question: where are cpanel email forwarders stored?
Answer: Many times while troubleshooting clients' mail issues you will need to find out the forwarders/autoresponders they have. On a cPanel server, this information is kept in separate files for each domain(and subdomain) in the /etc/valiases/ directory – like /etc/valiases/domain123.com; /etc/valiases/homedomain.net etc.