postifx, cyrus, virtual domains, defaultdomain followup

[Howard Shere]

I have spent some times trying various things to get what I want to 
work, but I have not been able to get it going.

I am trying to setup a server with virtual domains where at least one 
of them can be POPed or IMAPed by a user who only enters the user name 
as the account name when they login. I have not been able to find the 
right combination of options to make this happen.

Here are the options I have tried adjusting:

in imap.conf:

servername: mail.watervalley.net
unixhierarchysep: yes
virtdomains: on
defaultdomain: watervalley.net

and, in web-cyradm's conf.php:

$DOMAIN_AS_PREFIX = 1;

Those are the settings I think I need

In postfix's main.cf, I have:

mydestination =
         $myhostname,
         localhost.$mydomain,
         $mydomain,
         sheepgonewild.com,
         watervalley.net,
         mysql:/etc/postfix/mysql-mydestination.cf

#fallback_transport = lmtp:unix:/file/name
local_transport = lmtp:unix:/var/lib/imap/socket/lmtp
mailbox_transport = cyrus


-----

I have tried varying combinations of the above options (I have not 
changed anything in the postfix configuration, I just listed it above 
for reference) without changing anything else. The IP of the mail 
server resolves to mail.watervalley.net. I restart cyrus, sasl, and 
postfix everytime I make my changes and I use web-cyradm to delete the 
entire domain and I recreate it.

I see in the maillog that when mail comes in to user.watervalley.net, 
that postfix always changes it to user.watervalley.net at watervalley.net 
and the mail gets delivered fine, but if a user logs in with just thier 
user name, it will get changed to user at watervalley.net and that doesn't 
match.

There must be a combination of options which will let users for 
watervalley.net email check their mail with just user in the account 
name, but I can't figure it out.

What am I missing?

Howard Shere
Altair 8800a to Mac OS X so far...

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