Actually the mail reads like this
Hello Bejoy,
The intent of this mail is to inform you that your resignation has been accepted.
HR will initiate the process of officially relieving you. You are hereby requested to submit hard-copy of the resignation letter to Miss. XXXXXX who will in turn take it through to issue the relieving & experience letter.
Wishing you good luck in your subsequent endeavors.
Thanks and regards,
VVVVVV
But after a gap of two weeks they are asking me to serve three months / pay three months salary.
PLEASE LAWYERS REPLY SOON. I SMELL SOMETHING FISHY !!!