[Solved] Smtp not work in the system configuration


First that all, this software is awesome and powerfull, I have a
question, I’ve installed on centos 6 server with mysql, all work perfect and
so fast, my problem is when I set for send email as smtp in ‘System configuration’, thenI have
selected the option with the correct params(username, password and host), then I create an invoice
and send as e-mail, seems like the system send as phpmail and not smtp, i
know because I see the mail headers and show the IP address of the
source server (the smpt server is different).

Please can somebody advice about it?, thank you.

PD: We not receive some errors in the dashboard or anyone side of the control panel.

I have this log:

URL https://paste.invoiceplane.com/view/24c04a3a

Somebody can help me?

thank you advance