The starting height of the peer is much higher than the block explorer's current block, which would normally suggest a fork, but the explorer seems to be stuck in 2016:
http://explorer.graincoin.net/ After reading your message, I started my node but haven't synced with anyone. The timestamp of the last block I found on the network is 1491352187 at height 2256566. I'd like to sync with your node to see if it is the same chain just with more work. Would you ask your Grain.conf to enable the IRC functionality so peers may find you easily?
I did enable IRC briefly, but it fails with "Couldn't look up your hostname" and then closes the connection. I guess the IRC server doesn't like that my IP has no reverse DNS lookup.
You can addnode to 203.20.114.252 which is a 24/7 server that allows inbound connections. (edit: I have another peer connected now, maybe this is you?)
height=2241978 hash=0536fba30734973492696693b12c407a6461fb06dd7abed90bc9dcd29a3277ff
edit 2: Sigh, your 2256566 is higher than my height, and I can see PoS blocks being minted (not by me) right at this moment... so I guess we have a fork...
Current best from my POV:
08/31/17 09:09:49 SetBestChain: new best=00000193e81df87dcc61 height=2242037 trust=32970349440785 blocktrust=1815985 date=08/31/17 09:09:34
How does your trust value look? Greater or smaller than 32970349440785?