SMTP 2 Telegram very simple relay
Building requires go version go1.6.1. You may use older versions, but without any warranty.
Before build, you must instal several packages:
go get gopkg.in/telegram-bot-api.v4
go get github.com/spf13/viper
And build program:
go build
Copy binary file to /usr/local/bin, or just run from building directory:
./smtp2tg
or
./smtp2tg -c /etc/smtp2tg.toml
If you want to listen 25 port, you need run program as root.
Unfortunately, golang has some problems with daemonizing: golang/go#227
You can "daemonize" smtp2tg with system tools, like start-stop-daemon
You need to point valid dns MX-record to ipaddr, on which daemon is listening. Example, if smtp2tg is listening on 1.2.3.4:
$ORIGIN example.com.
...
alert A 1.2.3.4
alert IN MX 10 alert.example.com.
And then just send email to [email protected]