Pfsense 2.02 Ipsec VPN goes down randomly

[itslocalhost]

I have tried enabling and disabling  "Prefer older IPsec SAs ", tried disabling NAT-T  but still no luck.

This my ipsec vpn configuration.

Phase 1
Authentication method : Mutual PSK
Negotiation mode : Aggressive
Policy Generation :Default
Proposal Checking : Obey
Encryption algorithm : 3DES
Hash algorithm : SHA1
DH key group : 5
Life time :28800
NAT T    : Disabled
DPD  : enabled(60 secs and 5 retries)

Phase 2
Protocol :ESP
Encryption algorithms: 3DES
Hash algorithms: SHA1
PFS key group : 2
Life time : 1800

racoon: [–-------]: INFO: initiate new phase 1 negotiation: x.x.x.x[500]<=>x.x.x.x1500]
racoon: [–-------]: INFO: IPsec-SA request for x.x.x.x1 queued due to no phase1 found.
racoon: ERROR: failed to begin ipsec sa negotication.
racoon: ERROR: phase1 negotiation failed due to send error. b52634c42b55942e:0000000000000000
racoon: INFO: begin Aggressive mode.

[ttblum]

Normally 'queued due to no phase1 found' and 'phase1 negotiation failed' means that Phase1 settings aren't matching between the two endpoints.  What device is the remote endpoint?

[cmb]

"racoon: ERROR: phase1 negotiation failed due to send error" is what happens when you have a misconfigured PPTP server and a client disconnects. PPTP server should never use an assigned IP of any sort, especially WAN, as its server IP.