SMTP works , incoming emails lost...

1- hostname set to its own nameservers
2- hostname email works fine.
3- addon domain was added with as ns server.
4- i can send emails from addon email account but cant receive any emails…

somewhere emails are lost…

ive added the domain to postfix.cnf as follows:

mydestination =, localhost, localhost.localdomain
virtual_alias_domains =

any help?