[exim] multiple local transports for the same domain

Hi,

I'm staging a new mail imap server to replace our old one. During
this staging period, I'd like to deliver users' mail to both imap
servers. Both are cyrus-imap implementations. The exim version is
4.60. The local delivery "transport" is remote_lmtp. I'm not even
an exim novice....but I think the two relevant exim files are
router/900_exim4-config_local_user
and transport/30_exim4-config_remote_lmtp.

The file router/900_exim4-config_local_user looks like:

local_user:
    driver = manualroute
    route_list = * thor.scs.fsu.edu
    domains = + local_domains
    check_local_user
    local_parts = ! root
    transport =LOCAL_DELIVERY

-----
LOCAL_DELIVERY is set to remote_lmtp in the main configuration file.

How do I add a second instance of the local_user directive for remote
lmtp delivery to host jormungandr.scs.fsu.edu? I tried adding hosts
to the route list, but that seems to work as a fail-over method.

The file transport/30_exim4-config_remote_lmtp looks like:

remote_lmtp:
    transport_filter = /usr/bin/tr -d \\000
    driver = smtp
    protocol = lmtp

I'd prefer not to use any method that requires user information (like
a sieve script or .forward files).

thanks in advance,
Jeff McDonald

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Jeffrey McDonald, PhD                   School of Computational Science
Computer Research Specialist            High Performance Computing Manager
450 Dirac Science Library               jeffrey.mcdonald@???
Florida State University                Tallahassee, FL 32303-4120
phone: +1 850-644-5559                  fax:   +1 850-644-0098

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