How to implement dynamic DKIM signer using sqlite

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1

Hello team,

I am trying to configure dynamic dkim signer using SQLite in my init.lua, but i failed several times.

Please help me.

here is my configuration,

local sqlite = require ‘sqlite’

function get_key(domain, selector)
local db = sqlite:open ‘/opt/kumomta/etc/dkim/keys.db’
local result = db:execute(‘select data from keys where domain=? and selector=?’, domain, selector)
return result[1]
end

kumo.on(‘smtp_server_message_received’, function(msg)
local signer = kumo.dkim.rsa_sha256_signer {
key = {
key_data = get_key(msg:from_header().domain)
}
}
msg:dkim_sign(signer)
end)

Also, tell me what values should I import in my SQLite database? I used domain, selector and key-data

Please check and let me know.

3

This sounds more like paid PS work than KumoMTA support. Happy to work toward a solution if you want to bank a few hours of PS.

4

Alternatively, you should check to make sure the SQLite fb is actually working, then read the DKIM section in our docs to get all the fields you need.

5
tom (Tom Mairs) 6

:backhand_index_pointing_up: