[Exim] All recipients rejected when one address is bad.

When a user uses my EXIM box as a relay and one of many recipients is invalid (fails LDAP lookup), The entire message is rejected (not sent to the remaining recipients). For example: If the message is sent to both good.address@??? and bad.address@???, the message is delivered to neither. Ideas?

Exim 4.1 exiscan 4.10.20


ldap_aliases:
driver = redirect
data = ${lookup ldap {ldap://ldap.swmed.edu/o=intranet,dc=myplace,dc=edu?mailRoutingAddress?sub?(cn=$local_part)}}
file_transport = address_file
pipe_transport = address_pipe
domains = myplace.edu
no_more

TIA

Ed…