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- ### router/200_exim4-config_primary
- #################################
- # This file holds the primary router, responsible for nonlocal mails
- .ifdef DCconfig_internet
- # configtype=internet
- #
- # deliver mail to the recipient if recipient domain is a domain we
- # relay for. We do not ignore any target hosts here since delivering to
- # a site local or even a link local address might be wanted here, and if
- # such an address has found its way into the MX record of such a domain,
- # the local admin is probably in a place where that broken MX record
- # could be fixed.
- dnslookup_relay_to_domains:
- debug_print = "R: dnslookup_relay_to_domains for $local_part@$domain"
- driver = dnslookup
- domains = ! +local_domains : +relay_to_domains
- transport = remote_smtp
- same_domain_copy_routing = yes
- no_more
- # deliver mail directly to the recipient. This router is only reached
- # for domains that we do not relay for. Since we most probably can't
- # have broken MX records pointing to site local or link local IP
- # addresses fixed, we ignore target hosts pointing to these addresses.
- dnslookup:
- debug_print = "R: dnslookup for $local_part@$domain"
- driver = dnslookup
- domains = ! +local_domains
- transport = remote_smtp
- same_domain_copy_routing = yes
- # ignore private rfc1918 and APIPA addresses
- ignore_target_hosts = 0.0.0.0 : 127.0.0.0/8 : 192.168.0.0/16 :\
- 172.16.0.0/12 : 10.0.0.0/8 : 169.254.0.0/16 :\
- 255.255.255.255
- no_more
- .endif
- .ifdef DCconfig_local
- # configtype=local
- #
- # Stand-alone system, so generate an error for mail to a non-local domain
- nonlocal:
- debug_print = "R: nonlocal for $local_part@$domain"
- driver = redirect
- domains = ! +local_domains
- allow_fail
- data = :fail: Mailing to remote domains not supported
- no_more
- .endif
- .ifdef DCconfig_smarthost DCconfig_satellite
- # configtype=smarthost or configtype=satellite
- #
- # Send all non-local mail to a single other machine (smarthost).
- #
- # This means _ALL_ non-local mail goes to the smarthost. This will most
- # probably not do what you want for domains that are listed in
- # relay_domains. The most typical use for relay_domains is to control
- # relaying for incoming e-mail on secondary MX hosts. In that case,
- # it doesn't make sense to send the mail to the smarthost since the
- # smarthost will probably send the message right back here, causing a
- # loop.
- #
- # If you want to use a smarthost while being secondary MX for some
- # domains, you'll need to copy the dnslookup_relay_to_domains router
- # here so that mail to relay_domains is handled separately.
- smarthost:
- debug_print = "R: smarthost for $local_part@$domain"
- driver = manualroute
- domains = ! +local_domains
- transport = remote_smtp_smarthost
- route_list = * DCsmarthost byname
- host_find_failed = ignore
- same_domain_copy_routing = yes
- no_more
- .endif
- # The "no_more" above means that all later routers are for
- # domains in the local_domains list, i.e. just like Exim 3 directors.
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