[EXIM] Prob Exim virtual_domain

Hallo,

I have a problem with Mails send to multiple virtual_domains.

When i send a Mail to 1 virtual_domain:
To: user@???
Exim work correctly.

But when i send Mails to 2 or more virtual_domains:
To: user@???
Cc: user@???
or
To: user@???,user@???
then i'm request a follow error:

1999-04-14 18:08:03 user@???: virtual_smtp transport 
deferred: failed to expand hostlist ${lookup{$domain}dbm
{/usr/exim/etc/virtual.routes}{$value}fail} in virtual_smtp transport: 
lookup failed and "fail" requested:      
1999-04-14 18:08:04 user@???: virtual_smtp transport 
deferred: unknown error

- Is it a Bug or Future?
- What can i do?

- Config:
------------------------------------------------------------
Version: exim-2.12
OS:     linux-2.0.34,hpux-9.04

## configure
virtual_smtp:
driver = smtp
hosts =
${lookup{$domain}dbm{/usr/exim/etc/virtual.routes}{$value}fail}

virtual:
driver = aliasfile
domains = lsearch;/usr/exim/etc/virtual.domains
transport = virtual_smtp
no_more
file = /usr/exim/etc/virtual.domain.aliases
search_type = lsearch*


## virtual.routes
sub1.domain.de: mail.sub1.domain.de
sub2.domain.de: mail.sub2.domain.de
sub3.domain.de: mail.sub3.domain.de

## virtual.domains
sub1.domain.de
sub2.domain.de
sub3.domain.de

## virtual.domain.aliases
## *: fallback fuer alle
root: root@???
*:
----------------------------------------------------

Thanks H.L.

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