I am having with a gmail smtp server settings in mail setting for Opencart.
Google rewrites the address.
Gmail automatically rewrites the “from” line of any e-mail you send via their SMTP gateway to your Gmail address, and it overrides any Reply-To settings you may have in your e-mail software in favor of the one in Gmail’s web interface.
Here is a link on the matter:
So what I ended up doing is to use another one of hosting provider’s SMTP settings.
I hope this helps others in the future