mx and subdomain

[Norman Zhang]

Hi,

I would like to setup a subdomain for mail routing within my current domain.
I used the following setup,

db.test.com

mail.test.com IN A     10.10.10.10
@             IN MX 10 mail

subgroup          IN A     10.10.10.20
subgroup.test.com IN MX 10 10.10.10.20

Would the mail end with @subgroup.test.com still go to mail.test.com?

Regards,
Norman