Gmail settings for samsung gt s-3653

Hello,
sir I have a samsung gt s-3653(java) mobile but can't configure my phone's email account. some days ago I tried to configure it and I put -

Outgoing Mail (SMTP) Server - smtp.gmail.com
Port : 465
Secure Connection -SSL
Incoming Mail (POP3) Server - pop.gmail.com
Port: 995
A pop login - ticked.
Secure Connection -SSL
Download limit - 500.
Retrieving option - whole massage.
Keep on server - ticked.
Email Address:(******* @gmail.com)
User name: (******* @gmail.com)
Password: (>>>>>>>>>>>)
Pop before SMTP: Unticked.
SMTP auth: ticked.
Same as Pop3/SMTP: ticked.

even I configure the sync settings also and I put there - Server URL --->m.google.com
User name --->your Gmail id
Password --->your Gmail password
Domain --->google
Use SSL --->ON
even it when I tried to download mail on my mobile it sows gmail dns failed. plz help me to solve out the problem.