thank you, thank you all!
I got so many answers (list as following), and my problem is tsch is not in
/etc/shells.
Summmary follows, and so does my appreciation. 
 1. Make sure that user xxx is *not* in /etc/ftpusers
 2. Make sure that full pathname of the user xxx's shell is *in* /etc/shells
 3. user password can't  be blank (null).
 4. also check the entry for ftp in /etc/services, make sure they are intact, if
    not then correct them and stop and restart the rpc services.
 5. also see the man page of ftpd.
Brian White 		white@erim-int.com
Tim Evans		tkevans@eplrx7.es.dupont.com
raju@intelihealth.com
Seth Rothenberg 	SROTHENB@montefiore.org
Oleg Olovyannikov	olovyann@pfizer.com 
Mark A. Baldwin		baldma@aur.alcatel.com
Matthew Stier		Matthew.Stier@tddny.fujitsu.com
Chris Medaglia		medaglia@testmail.putnaminv.com
Bhaba R. Misra		brm@bilbo.cns.vt.edu
Asim Zuberi 		asim@psa.pencom.com
Jose Luis Delgado	jdelgado@nexus.net.mx
David J. Knight		knight@atmos.albany.edu
Rasana Atreya		rasana@netcom.com 
Normand Ranger		rangern@CIRANO.UMontreal.CA 
 Sean Ward		seanw@amgen.com
Tariq Ahmed		tahmed@viper.istar.ca
James Coby		James.E.Coby.Jr@cdc.com
Tim Carlson 		tim@santafe.edu
Gary Carr		gcarr@lanl.gov
Tom Doong		doong@guitar-gw.iappco.com
Uwe Dahm		Uwe.Dahm@pet.mpin-koeln.mpg.de
Rich Snyder		rsnyder@eos.hitc.com
Brian Mullen		mullen@hurricane.net2.nlu.edu
Kevin Tse		ktse@NVidia.COM
Khanh Vo		KVO@nrc.gov
saeed abubakar		saeed@cyber.net.pk
Chris Marble		cmarble@orion.ac.hmc.edu
Craig Gates		cgates@fnoc.navy.mil
Parks Fields		parks@xdiv.lanl.gov
Padmanabh M Padaki	padaki@mach5.tamu.edu
Ric Anderson		ric@rtd.com
Marina Daniels		Marina.Daniels@ccd.tas.gov.au
Kamal Kantawala		kamal@mcc.com
vit@mmk.ru		Vitaly Beliaev
a.f.blok		a.f.blok@PTT-Telecom.NL
Andrew Toon		andrew@traceplc.co.uk
Duncan C. White		D.White@mcs.surrey.ac.uk
Darren			darren@onlinemagic.com
Colin
**********************************************************
Original questions:
Hi, SMs:
 
when I try to ftp between two Sparc 10 system ( OS: Solaris 2.5), 
I always get the error message:
 530 User xxx access denied.
 Login failed
can you throw some lights on this issue?
 BTW, I can telnet/rsh between these two systems. 
This archive was generated by hypermail 2.1.2 : Fri Sep 28 2001 - 23:12:00 CDT