mailcow/data/conf/rspamd/local.d/dkim.conf

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2016-12-10 03:39:02 +08:00
sign_condition =<<EOD
return function(task)
local smtp_from = task:get_from('smtp')
local mime_from = task:get_from('mime')
local rspamd_logger = require "rspamd_logger"
if smtp_from[1]['domain'] ~= nil and smtp_from[1]['domain'] ~= '' then
domain = smtp_from[1]['domain']
rspamd_logger.infox(task, "set domain found in smtp from field to %s", domain)
if not task:get_user() then
rspamd_logger.infox(task, "found domain in smtp header field, but user is not authenticated - skipped")
return false
end
elseif mime_from[1]['domain'] ~= nil and mime_from[1]['domain'] ~= '' then
domain = mime_from[1]['domain']
rspamd_logger.infox(task, "set domain found in mime from field to %s", domain)
else
rspamd_logger.infox(task, "cannot determine domain for dkim signing")
return false
end
local keyfile = io.open("/data/dkim/keys/" .. domain .. ".dkim")
if keyfile then
rspamd_logger.infox(task, "found dkim key file for domain %s", domain)
keyfile:close()
return {
key = "/data/dkim/keys/" .. domain .. ".dkim",
domain = domain,
selector = "dkim"
}
else
rspamd_logger.infox(task, "no key file for domain %s - skipped", domain)
end
return false
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end
EOD;