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Here is an example of an Exim configuration file that will: Accept messages FOR the domain example.com. Accept messages FROM itself (127.0.0.1) and two other ranges of IP addresses (10.0.0.0/8 and 192.168.0.0/16). This config has very few features but is still functional enough to work (on a test system that is not accesible from the Internet). This config also assumes that if you wish to send an email to
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, that alice has a valid account and mailbox on the Exim server itself.
# start of /etc/exim/exim.conf ######################################################################
# EXIM CONFIGURATION #
######################################################################
acl_smtp_rcpt = acl_check_rcpt
######################################################################
# ACL CONFIGURATION #
######################################################################
begin acl
acl_check_rcpt:
accept domains = example.com : *.example.com endpass verify = recipient
accept hosts = 127.0.0.1 : 10.0.0.0/8 : 192.168.0.0/16
deny message = relay not permitted
######################################################################
# ROUTERS CONFIGURATION #
######################################################################
begin routers
dnslookup:
driver = dnslookup
domains = ! example.com : ! *.example.com
transport = remote_smtp
ignore_target_hosts = 0.0.0.0 : 127.0.0.0/8
no_more
localuser:
driver = accept
check_local_user
transport = local_delivery
cannot_route_message = Unknown user
######################################################################
# TRANSPORTS CONFIGURATION #
######################################################################
begin transports
remote_smtp:
driver = smtp
local_delivery:
driver = appendfile
file = /var/mail/$local_part
delivery_date_add
envelope_to_add
return_path_add
group = mail
mode = 0660
######################################################################
# RETRY CONFIGURATION #
######################################################################
begin retry
# Address or Domain Error Retries
# ----------------- ----- -------
* * F,2h,15m; G,16h,1h,1.5; F,4d,6h
# end of /etc/exim/exim.conf
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