Could set postfix transport? [SOLVED]

[akong77]

I has two domain.
One domain (aaa.com) have webpage and mail account in keyhelp.Another one domain (bbb.com) just domain webpage in keyhelp.Mail account in another server.
If aaa.com send mail to bbb.com.The keyhelp will show user unknown.Could I set postfix transport and trans aaa.com to bbb.com of mail server?
IS just add transport this file?

[Florian]

Hallo,

simply deavctivate the mail services for the domain that uses external mail servers.

Click on the pencil behind the domain -> tab E-Mail

[akong77]

Thanks a lot.The problem has fix done.