ftp - access denied

[Mike Collins]

I am running a Sun 3/280 under SunOS 4.1. I recently set up the ftp
anonymous facility according to the Sun documentation. The passwd entry
for the ftp account is as follows:

ftp:*:386:600:ftp anonymous login:/home/ftp:/bin/csh

The anonymous facility works well, but now others users, who have accounts
on our machine, cannot use ftp. A typical session goes somethings like
this:

nilas.eol.ists.ca % ftp eol.ists.ca
Connected to eol.ists.ca.
220 eol FTP server (SunOS 4.1) ready.
Name (eol.ists.ca:collins): collins
530 User collins access denied.
Login failed.
ftp>

This occurs whether I am attempting to run ftp from a client of eol or an
independent machine. Can anyone point me at the problem?  Thanks!!