openvpn ping-restart on client timeout not resolving server

seccentral

i have a problem with all clients disconnecting after some time of inactivity, all i get is a dns error on client:

Wed Oct 16 15:59:17 2013 RESOLVE: Cannot resolve host address: my-remote-vpn.com: No such host is known.

my client config is setup to use server fqdn, now if i try ip address it still doesnt work.
this is the server config :

# protocol port
port 1194
proto udp
dev tun

# listen on this only
local <addr>

# certificates
ca /etc/openvpn/keys/ca.crt
cert /etc/openvpn/keys/cert.crt
key /etc/openvpn/keys/cert.key # This file should be kept secret
dh /etc/openvpn/keys/dh2048.pem

# client network settings
server 10.8.0.0 255.255.255.0
push "redirect-gateway def1 bypass-dhcp"
push "dhcp-option DNS 208.67.222.222" # change if you don't want opendns
push "dhcp-option DNS 208.67.220.220"

# dpd
keepalive 10 120

tls-auth /etc/openvpn/keys/ta.key 0 # This file is secret
cipher AES-256-CBC # AES
comp-lzo
user nobody
group nogroup
persist-key
persist-tun

# auth
auth-user-pass-verify /etc/openvpn/script/login.sh via-env

# script connect disconnect
script-security 3 system
client-connect /etc/openvpn/script/connect.sh
client-disconnect /etc/openvpn/script/disconnect.sh

# log status
status /etc/openvpn/log/server.log
log-append /etc/openvpn/log/openvpn.log
verb 3

seccentral

this is the client config

client
dev tun
proto udp
remote my-remote-vpn.com 1194
resolv-retry infinite
nobind
persist-key
persist-tun
<ca>
---
</ca>
<cert>
---
</cert>
<key>
---
</key>
ns-cert-type server
remote-cert-tls server
tls-auth ta.key 1
<tls-auth>
---
</tls-auth>
auth-user-pass
cipher AES-256-CBC
comp-lzo
verb 3