This is a piece of my routers configuration:
provider:
driver = manualroute
transport = remote_smtp
domains = ! +local_domains
route_list = * smtp.provider.com byname
dnslookup:
driver = dnslookup
domains = ! +local_domains
transport = remote_smtp
ignore_target_hosts = 0.0.0.0 : 127.0.0.0/8
Is it possible to achive the following: if router "provider"
defers for some reasons (temporary smtp error from provider,
no connection with provider's smtp, etc), message should be
passed to next router "dnslookup".
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