Can not connect through sshfs because a wrong configuration at ~/.ssh/config file

I am logged in in my local PC (Fedora 24) as rperez. From this PC I needed to connect to a remote server through sshfs so I generated a private/public key by running ssh-keygen. Using the following command I am able to connect to the server without any problem:

sshfs rperez@server_ip:/home/rperez -p 2051 ~/dev -o auto_cache,reconnect

Now I have two Github account: one to be used from work, one to be used from home for personal projects. I would like to connect to both using SSH so I have setup the first one using the generated key for rperez and again that works fine.

I am trying to setup the second one (the personal) on the same PC so I did run this command:

ssh-keygen -t rsa -C "[email protected]" 

I have created the file ~/.ssh/config with the following content:

#rperez account
Host github.com-rperez
    HostName github.com
    User git
    IdentityFile ~/.ssh/id_rsa

#reypm account
Host github.com-reypm
    HostName github.com
    User git
    IdentityFile ~/.ssh/id_rsa_reynierpm

#Server
Host <server_ip>
    IdentityFile ~/.ssh/id_dsa

And this is where my problem started. Now running the following commands:

sshfs rperez@server_ip:/home/rperez -p 2051 ~/dev -o auto_cache,reconnect
sshfs rperez@server_ip:/home/rperez -p 2051 ~/dev -o auto_cache,reconnect,IdentityFile=~/.ssh/id_rsa

Return this error:

read: Connection reset by peer

I should add, regardless the current problem, that I am not able to connect either to any Github repository

What is wrong with this configuration?

I have take some ideas from here but none is working for me. Also I am started from this guide for setup the Github accounts

Update: verbose output

ssh -vvv -p 2051 rperez@server_ip
OpenSSH_7.2p2, OpenSSL 1.0.2h-fips  3 May 2016
Bad owner or permissions on /home/rperez/.ssh/config