My Smartermail is installed on a godaddy vps. And all outgoing email needs to go through godaddy's SMTP relay servers.
I have an alias setup that simply forwards any mail to it out to a gmail address.
So, if spam comes into that alias, it will immediately be sent to the gmail address.
And what I am thinking is that when gmail starts seeing an excess of spam, it may report my smartermail server as the "source" of that spam because I'm thinking that when smartermail forwards the spam messages via the alias, it is making a separate SMTP connection to gmail, so google thinks the email is coming from my server instead of the real (original) sender of that spam.
I see that I can setup "outgoing SMTP spam filtering".
So, If I enable outgoing SMTP spam filtering, will that filter the email being forwarded (sent out) via the alias I setup (which forwards the emails to a gmail account)?
My hope is to setup the system so that any incoming email to the alias is tested for spam, and if found, it will NOT forward it to the external gmail address.