/usr/share/doc/amavisd-new/README.exim_v4 is in amavisd-new 1:2.7.1-2ubuntu3.
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How To Use AMaViS With Exim 4.x
*******************************
Scanning incoming/outgoing and relayed mail
by Jochen Erwied (mbs GmbH), edited by Mark Martinec
(based on Postfix guidelines and previous work
on Exim setup by John Burnham and Patrice Fournier)
[routers]
# instruct Exim to pass all mail using SMTP to amavisd,
# except the mail that just came-in back to Exim from amavisd
# through the local port 10025, as these messages were already
# checked and approved by amavisd
amavis:
driver = manualroute
condition = "${if eq {$interface_port}{10025} {0}{1}}"
# if scanning incoming mails, uncomment the following line and
# change local_domains accordingly
# domains = +local_domains
transport = amavis
route_list = "* localhost byname"
self = send
(from Patrice Fournier): This router must be the first router
if you want to scan all mail. If you only want to scan mail destined
to local domains, you either add a "Domain = local_domains" line to it
or put it after your remote_smtp router.
(from Ralf G. R. Bergs - suggestion to elaborate the above 'condition' line):
# Do NOT run if received via 10025/tcp or if already spam-scanned
condition = "${if or {{eq {$interface_port}{10025}} \
{eq {$received_protocol}{spam-scanned}} \
}{0}{1}}"
(2005-10-28: removed {eq {$sender_address}{}} from the above as recommended
by Igor D'Astolfo, as it would let through junk messages with null
sender address)
(from Aaron Lehmann):
The example router configuration in README.exim_v4 should include the
no_verify option. Without this, exim will accept mail addressed to
invalid users and then complain to postmaster@ about the frozen messages.
Better yet, don't accept mail for unknown users in the first place:
http://www.webhostgear.com/50.html
[transports]
# SMTP transport to be used for the Exim -> amavisd path;
# by default amavisd listens on the loopback interface on port 10024
# (amavisd.conf: $inet_socket_port = "10024")
amavis:
driver = smtp
port = 10024
allow_localhost
The default input configuration needs to be changed to:
# Tell Exim to accept SMTP also (besides the usual port 25) on the
# loopback interface (localhost) on port 10025, which is where
# the checked messaged come from amavisd back to Exim
# (amavisd.conf: $relayhost = "127.0.0.1"; $relayhost_port = "10025")
local_interfaces = 0.0.0.0.25 : 127.0.0.1.10025
NOTE:
There is a problem in the Net::SMTP Perl module (version 2.17
and earlier), which as far as I know only affects the Exim setup
with amavisd-new: MTA-generated notifications from <> appear to be
comming from <<>> and are rejected by MTA. Please upgrade the Perl
module libnet (which contains Net::SMTP) to version libnet-1.12.
Upgrading this module is probably a good idea even if you use other MTA.
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