email problem 6.00.3 pls solve

HI all

I had a problem in dolphin 6.003

1. members password retrieving email problem

forget password email never arrive to my member’s email account although it indicated : you hv recognized as members of …..

2. mass mailer problem

mass email showing at admin panel  had been sent out but never arrived at members email account

pls solved ?

thks

juhenuind