POP-3 problems

This is going to kind of hard to explain...so here's some background.  I have 2 virtual domains.  domain1.com and domain2.com. I have dns1.domain1.com setup in my dns as my dns server and mail.domain1.com setup as my default mail server.  I have the MX record for domain2.com pointing toward mail.domain1.com.  This all appears to be ok.  

Now in Linuxconf (RHLinux6.0):
  For Mail delivery system I have mail.domain1.com setup as my Mail server and my host name that my ISP gave me as my Mail gateway (this seems to be ok).  I have domain2.com setup as a virtual email domain (domain2.com is setup in my dns).  For virtual domain user aliases, I have an alias name "webmaster" under domain2.com and all e-mail is being forwarded to "realuser1" (this "realuser1" is setup as a real user in linux).
Next, I set up a real POP account for "realuser1".
Using Netscape in linux, I can send mail with no problem using smtp and using mail.domain1.com as my smtp server and "realuser1" as username.
  However, using mail.domain1.com as my incoming POP server and I try to retreive e-mail, it tells me that "there is an error with my POP server"
  Next, I tried to change the pop-3 line in my /etc/inetd.conf file to"
 pop-3 stream tcp nowait root /usr/lib/linuxconf/lib/vpop3d
and setup a virtual pop account in linuxconf with login name "virtualuser2" and a password.  Now when I try to receive mail from the pop server (using either "virtualuser2" or "realuser1")", it gives the error "The mail server responded: invalid usercode or password, please try again...etc."  

I'm completely frustrated at this point and don't know what to try next.  I've read something about qpopper, but I don't know where to get it or how to install it or anything. If there's a way I can get this to work without installing qpopper, please let me know.  Thank you.
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Qpopper is an excellent alternative, by the way... it's what we use over here at EE HQ :)

steve@experts-exchange.com - sysadmin
GorGor1Author Commented:
I installed qpopper and and tested it with telnet.  It works.  I created a real user.  Now when I try to log in as the real user, I get an error:
"The mail server responded:
 Password supplied for "realuser1" is incorrect.
 Please enter a new password."

I don't know why it's doing this since I set up a POP account for "realuser1" and the password I'm entering is correct.  "realuser1" is in my /etc/passwd file.  Any Ideas?
i think you got an error
the line in inetd.conf should be like mine:

pop-3 stream tcp nowait root /usr/sbin/tcpd /usr/lib/linuxconf/lib/vpop3d ipop3d

humm except that everything you wrote is good.
Also a good test after you change your inetd.conf line restart and do a #telnet vdomain.com 110
you should see VPOP3 no POP3

Hope that help

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