Bug in order confirm email

[popfriend]

Every order email or order updated email are from my host name
for example, my account name in my host is xxx, and I use hostmonster host. the email is from xxx@host23.hostmonster.com

the 'reply-to' email address is okay, replaced with my the store owner email address.

how to change the 'from email address' to the store own email address.

[popfriend]

TRY register a new user at http://discountstore.popfriend.com

I have checked the code, everything seems fine, the contact module work well.
Strange!

[popfriend]

the problem has been sorted out, which is not related opencart.
it's a hostmonster configuration problem.

must set a new email account, before send any email via their host.