hw to get subscribed to receive email notificatn

I wanna knw hw to get subscribed to the forum regarding d ff's which I read.. as I use my mobile to go through the forum sites n ff's and before I used to get email notifications abt those ff's which I commented on them.. And nw all of a sudden dunno wat happened I'm nt receiving any email.. I'm totally irritated Nw.. so plz do help me if nyone knws abt this problm.. And yeah mine is Gmail account nlyy..

I even went to d contact site.. Bt its sayng "there is a server problem!!"