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Current File : /usr/share/doc/opendkim-2.11.0/setup.lua.sample
--
-- Copyright (c) 2009, 2010, 2012, The Trusted Domain Project.
-- All rights reserved.
--
-- setup.lua.sample -- sample version of the "setup" script that demonstrates
-- all of the features of the configuration file
--
-- The setup script is executed after all header fields have been received
-- but before any DKIM operations have begun. Thus, this script can decide
-- what signatures, if any, should be added.
-- We never sign mail to example.net
nrcpts = odkim.rcpt_count(ctx)
for n = 1, nrcpts do
rcpt = odkim.get_rcpt(ctx, n - 1)
if string.find(rcpt, "@example.net", 1, true) ~= nil then
odkim.verify(ctx)
return nil
end
end
-- We blindly accept mail that looks like it's from example.org
from = odkim.get_fromdomain(ctx)
if from == "example.org" then
odkim.set_result(ctx, SMFIS_ACCEPT)
return nil
end
-- If POP-before-SMTP failed, just verify it
popauth = odkim.check_popauth(ctx)
if popauth == 0 then
odkim.verify(ctx)
return nil
end
-- See if {auth_author} was set
author = odkim.get_mtasymbol(ctx, "{auth_author}")
-- If it's not from an internal source or authenticated, just verify it
if odkim.internal_ip(ctx) == 0 and author == nil then
odkim.verify(ctx)
return nil
end
-- If MTA name tests were requested, do the test and just verify if no match
mtadb = odkim.get_dbhandle(ctx, DB_MTAS)
if mtadb ~= nil then
mtaname = odkim.get_mtasymbol(ctx, "{daemon_name}")
if mtaname ~= nil then
if odkim.db_check(mtadb, mtaname) == 0 then
odkim.verify(ctx)
return nil
end
end
end
-- Compare "From" domain to domains DB, just verify if no match
domains = odkim.get_dbhandle(ctx, DB_DOMAINS)
if domains == nil or odkim.db_check(domains, from) == 0 then
odkim.verify(ctx)
return nil
end
-- Since we got this far, we're signing; make a signing request using the
-- key "defkey"
odkim.sign(ctx, "defkey")
-- If it looks like it might be going to a list (in that the recipient ends
-- in "-l"), add an "l=" tag. (We need to add a hook for the body length
-- DB, perhaps.)
for n = 1, nrcpts do
rcpt = odkim.get_rcpt(ctx, n - 1)
if string.find(rcpt, "-l@", 1, true) ~= nil then
odkim.use_ltag(ctx)
end
end
-- That's it!
return nil