Does something like this exists in HA? An SMTP relay/forward service
I have some security camera’s that can send an email on an alert.
But I don’t like that they send an e-mail directly to an external internet SMTP server.
So I’m searching for a SMTP relay/forward service in HA.
So that HA receives all the alert emails (with JPEG attachment) from my camera’s and relay/forwards them immediately to an external/internet email account
Can you even configure your camera to use a different email server? If not, then a service like that wouldn’t help.
You could technically set up a mail proxy by configuring something like Qmail or sendmail or postfix locally, and using that to forward-email somewhere authenticated (most legit mail servers will not let unauthenticated parties send e-mail). You will of course have to do some processing of the incoming email to change the “From” address so that it matches whatever authentication credentials you’re using to send that email from. I believe the postfix documentation is clear on how to do all of that.