> transport1_query_filter = (|(mail=%s)...(mailHost=specialhost))
> transport1_result_attribute = mailHost
> transport1_result_filter = smtp:[%s]:specialPort
>
> transport2_query_filter = (|(mail=%s)...)
> transport2_result_attribute = mailHost
> transport2_result_filter = smtp:[%s]
> 
> transport_maps = ldap:transport1, ldap:transport2