LM as SMTP-Server

[xxyzz]

Hi, I am fiddeling with a concept for sending alerts on LM

I have a server that can send me E-Mails if something's wrong. I'd like to use LM alerts as a single point to check for alarms.
Can I setup an SMTP-Server on LM to recive mails and display the messages in the alert manager?

I have thought about using NodeRED as SMTP-Server and forward messages via MQTT but if i could lose that layer of abstraction it would probably benefit me in the long run.

As always, thanks for taking you time!

Cheers

[admin]

Run as a resident script with 0 sleep time. Received messages and headers will be visible in LM Logs tab.

Code:

local server = require('socket').tcp() server:bind('*', 25) server:settimeout(60) server:listen() local function handleclient(client)   local init = {}   local headers = {}   local message = {}   local state = 'helo'   client:settimeout(3)   client:send('220 localhost\r\n')   local function sendok()     client:send('250 ok\r\n')   end   while true do     local line = client:receive()     -- log(line)     if not line then       break     end     if state == 'helo' then       local head = line:match('^(%w+)%s+')       if head == 'HELO' or head == 'EHLO' then         sendok()         state = 'init'       else         break       end     elseif state == 'init' then       if line == 'DATA' then         state = 'headers'         client:send('354 continue\r\n')       else         if line ~= '' then           init[ #init + 1 ] = line         end         sendok()       end     elseif state == 'headers' then       if line == '' then         state = 'message'       else         local header, value = line:match('^([^:]+):%s+(.+)$')         if header and value then           headers[ header:lower() ] = value         end       end     elseif state == 'message' then       if line == '.' then         state = 'quit'         sendok()       elseif line ~= '' then         message[ #message + 1 ] = line       end     elseif state == 'quit' then       if line == 'QUIT' then         state = 'done'         client:send('221 bye\r\n')       end       break     end   end   if state == 'done' then     log(init)     log(headers)     log(message)   end   client:close() end while true do   local client = server:accept()   if client then     handleclient(client)   end end