Sending email without getting blocked
I have a PHP application that needs to send outgoing mail. It keeps getting blocked by Comcast because it doesn't have a PTR record.
The web app uses a 3rd party DNS. It uses CentOS and is running named, but the ns1 and ns2 addresses are to a 3rd part server.
Can someone explain how I can setup my server so it doesn't get blocked? I think I need a PTR record and an SPF record. We were using Google business apps to send email, but they are horrible - there is a limit on the amount of email you can send out and it's about a 1/3 of what our web app uses.
It just crazy how hard all this anti-spam stuff has made it to send out emails. Gmail is the only company I've seen with decent spam detection =/