Server only for sending mail
I want to use one of my amazon ec2 servers for sending news for my website users. Ofcourse the most important thing that gmail, yahoo or other mail services wouldnt put these news messages to spam folder. What should be correct dns records to verify my domain? I dont know, is it good, but my mx records are setup to google mail servers. Sould I use SPF record to this mail sending server? Because now on mail headers I see this message: Received-SPF: neutral (google.com: ip.ip.ip.ip is neither permitted nor denied by best guess record for domain of news(eta)domainname.com)
If I use SPF record, should also use SPF record to contain google mail servers? because mycompany mails are sent by google mail servers.