In your SPF record, change ?all to ~all

Still going to spam :(

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Date: Mon, 14 Oct 2013 10:04:11 -0500
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and still going to spam!

Have you checked to make sure your domain and/or IP address are not blacklisted?

Yes sir, doesn't seem to be listed. I also have a nother domain, everything is ok as well but it also goes to spam!

Looks like there's some redundancy in that you declare a and a:camoatech.com and ip4:162.243.41.157. Perhaps repeating essentially the same value 3 times is confusing the SPF filters you're encountering.

Try shortening up your SPF record from "v=spf1 a mx a:camoatech.com ip4:162.243.41.157 ?all" to "v=spf1 mx a ~all".

I'll try that. but SPF shows passed!

That did not work, I suspect it may be reverse DNS?

"... I suspect it may be reverse DNS?"

Could be. Login to your DigitalOcean Control Panel and make sure your PTR record is correct. If not, simply recreate the droplet's hostname via the D.O. C.P. and the PTR record will be updated automatically.

50% of digital ocean's AMS datacenter's IP's are blacklisted. That's why your email are going in to a spam folder in gmail.