postfix aliases ignored

[Erik Steffl <steffl@bigfoot.com>]

  it looks like postfix (for a long time, it's not a new problem) 
aliases are not working on my system, all aliases are ingored, any 
pointers appreciated, here are the details:

  debian unstable
  postfix 2.1.4-4

  relevant lines in /etc/postfix/main.cf:

alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases

  relevant line in /etc/aliases (erik is a user on the system, can 
receive email from both local machine and from outside, mail erik works):

www-data: erik

  I ran newaliases which according to man 5 aliases should rebuild the 
/etc/aliases.db and it looks like it did (I mv'd the old one of the way 
and the new one was rebuilt (see Aug 2 date):

jojda:/etc# ls -l aliases*
-rw-r--r--  1 root root  1192 Jun 15 01:39 aliases
-rw-r--r--  1 root root 12288 Aug  2 12:55 aliases.db
-rw-r--r--  1 root root 12288 Jul  3 06:04 aliases.db.20040802
-rw-r--r--  1 root root 12288 Apr 20  2003 aliases.db.db3.orig
-rw-r--r--  1 root root 12288 Jun 15 01:40 aliases.db.org

  I restarted both postfix and cyrus (I don't know when the alias/db is 
read).

  looks like postfix is still trying to deliver to www-data (after Aug 
2 12:55), cyrus complains:

Aug  2 13:00:01 jojda postfix/lmtp[6880]: 224D2C80D0: 
to=<www-data@zasran.com>, 
relay=/var/run/cyrus/socket/lmtp[/var/run/cyrus/socket/lmtp], delay=0, 
status=bounced (host /var/run/cyrus/socket/lmtp
[/var/run/cyrus/socket/lmtp] said: 550-Mailbox unknown.  Either there is 
no mailbox associated with this 550-name or you do not have 
authorization to see it. 550 5.1.1 User unknown (in reply to RCPT
 TO command))

  any ideas?

  TIA

	erik