Skip to main content

You are not logged in. Your edit will be placed in a queue until it is peer reviewed.

We welcome edits that make the post easier to understand and more valuable for readers. Because community members review edits, please try to make the post substantially better than how you found it, for example, by fixing grammar or adding additional resources and hyperlinks.

5
  • How do you expect the Arduinos to reach mms.att.net if you don't want it to communicate with the outside? Commented Jul 2, 2016 at 20:04
  • 1
    That's the point I'm trying to make. The Arduinos send email to the local email server, which forwards it to mms.att.net. Commented Jul 2, 2016 at 20:17
  • Not sure what you don't understand but you only have two choices: let the Aduinos communicate with the Internet and allow it to do what you want or block it and prevent what you want from being possible. You make that decision. The configurations needed to send email don't require you to have a domain name to yourself, but could be done using an email address you have which you could use for sending. Commented Jul 2, 2016 at 20:23
  • I'd advertise a service on the local server (only towards the local network) and craft the email on the local server. i.e. the arduinos will not need to talk SMTP (that's a lot of processing for an arduino) just send a simple message to the local server. Most distros today run postfix on the default install, that's enough to send an email given that you have a connection to the internet. Just, as Julie says, you might need to hack the From: header to point to a real email with a real domain (this is often needed to get past the most trivial spam detectors). Commented Jul 2, 2016 at 20:29
  • The Arduinos don't have enough power or RAM to do encrypted communications, so if they were to do their own email transfer they'd have to send the email password in the clear, which I don't want. And if you're doing residential networking with ATT, the price of poker goes way up if you want an MX record in the system -- which is why the question about not having a domain. Commented Jul 2, 2016 at 20:31