Question : Webserver Sending Email how to avoid being bloacked as spam

I want to allow one of our company websites - abc123.com to email from our normal email domain zyx098.com. Currently the webserver server has no references on our domain records for the zyx098.com domain,. all the MX records point to our geniune mail server. I know I can just get the server emailing but I need to make sure spam filters don't get tirggered when they do reverse lookups, SFP checks etc.

Note that the webserver will only be sending mail and not inbound.

If anyone can give me some pointers please.

Cheers

Answer : Webserver Sending Email how to avoid being bloacked as spam

We cant forward mail to our mail server, the web server needs to be able to send byitself with no dependencies.