All mail goes to spam

[apinto]

Double checked everything about your logs and I could not find anything wrong with your configuration.
From my experience (because I had a similar case recently), it has to do with your IP reputation, probably you are using some provider that is known for spam.

Your email is NOT being marked as spam by everyone, probably just the big players (Google, Microsoft and Yahoo).

Check your IP here: http://www.apews.org/
Result is:
Oooops 104.238.182.138 is currently listed in APEWS :-(
Entry matching your Query: E-180001 104.0.0.0/8
CASE: C-1404 - IP allocations to providers with a bad reputation
Special Reason: No traffic until allocated
History: Entry created 2007-05-28


All other Blacklists are Clean (http://whatismyipaddress.com/blacklist-check) however it might mean that this ip (or ip range) sent spam before it was on your "hands" and that Google marked it and never deleted it.


I wish you good luck, you have a hard road ahead you!!
Easier will be to buy another IP...