paxton
/
mailcow
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

DKIM sign auto-responder messages by using mime from field

master
andryyy 2016-12-21 20:55:38 +01:00
parent 5a3bfa1e59
commit 2783510bef
1 changed files with 25 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
data/conf/rspamd/local.d/dkim.conf
View File

@ -1,26 +1,33 @@
sign_condition =<<EOD sign_condition =<<EOD
return function(task) return function(task)
local from = task:get_from('smtp') local smtp_from = task:get_from('smtp')
local mime_from = task:get_from('mime')
local rspamd_logger = require "rspamd_logger" local rspamd_logger = require "rspamd_logger"
if not task:get_user() then if smtp_from[1]['domain'] ~= nil and smtp_from[1]['domain'] ~= '' then
rspamd_logger.infox(task, "Skip DKIM signing for unauthorized user") 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 return false
end end
if from and from[1]['addr'] then local keyfile = io.open("/data/dkim/keys/" .. domain .. ".dkim")
lastAtSymbol = from[1]['addr']:find("[^%@]+$") if keyfile then
local domain = from[1]['addr']:sub(lastAtSymbol, #from[1]['addr']) rspamd_logger.infox(task, "found dkim key file for domain %s", domain)
local keyfile = io.open("/data/dkim/keys/" .. domain .. ".dkim") keyfile:close()
if keyfile then return {
rspamd_logger.infox(task, "DKIM signing mail for authorized user of domain %s", domain) key = "/data/dkim/keys/" .. domain .. ".dkim",
keyfile:close() domain = domain,
return { selector = "dkim"
key = "/data/dkim/keys/" .. domain .. ".dkim", }
domain = domain, else
selector = "dkim" rspamd_logger.infox(task, "no key file for domain %s - skipped", domain)
}
else
rspamd_logger.infox(task, "Authorized user, but no key file for domain %s - skipped DKIM signing", domain)
end
end end
return false return false
end end