[no subject]

I know for sure the pop3 client is set up correctly, I've cranked up my
sniffer and analysed the pop3 traffic - each time, it connect fine -
there's just no mail.  Then, I log in to the lynux box as root and I've got
mail waiting (redirected from post-master) from MAILER-DAEMON saying that
there was undeliverable mail and that the user Dalex was not found.  Dalex
was the user I connected with from the pop3 client

I get the same problem whether I use an alias or not and I've checked out
/etc/aliases.  My user alias is set up in the same format that root was for
post-master. I've run the newaliases command and it processed the aliases
file  without a hitch.  

At my current level of experience with linux (that being "sub-newbie"), I'm
out of ideas.  Can anyone tell me what I'm doing wrong or point me toward a
really good HOWTO that covers this problem?  Thanks for your time!  

-Dan Alexander