openLuup email server

[a-lurker]

Hello AK

Have been writing about the openLuup email server as I was tinkering with it the other day. One minor problem: it looks like the domain part of the email address eg ...@openLuup.local is case sensitive in openLuup.

Looking round the net, it suggests that the local part is case sensitive but the domain part is not meant to be. To keep things so they are more likely to work, it's suggested the email address should be totally case insensitive regardless. Refer to rfc2821 page 13 or search on the word "sensitive". Suffice to say I was using mail@openluup.local rather than mail@openLuup.local, so it didn't work for me.

Next challenge was that the file saved in /etc/cmh-ludl/mail has "Content-Transfer-Encoding: base64" so the body of the email was encoded:

Received: from ((openLuup.smtp) [ip_address_1]
 by (openLuup.smtp v18.4.12) [ip_address_2];
 Tue, 26 Nov 2024 14:21:22 +1000
From: "dali@switchboard" <dali@switchboard>
To: "mail@openLuup.local" <mail@openLuup.local>
Subject: Warning form R2E.
MIME-Version: 1.0
Content-Type: text/plain
Content-Transfer-Encoding: base64

QXV0byBXYXJuaW5nOiBDb2xkIHN0YXJ0IGV2ZW50

The above base 64 text translates to "Auto Warning: Cold start event".

Is it your preference to leave the saved files in the raw mode or would you consider translating the base64 text in the openLuup code base?

On a side note, does the reception of an email by openLuup generate some sort of trigger that can be watched. In the case above; the email represents the restoration of power after a power outage. I would like to know about that by the email triggering a "Telegram" notification on my mobile.

I see that the images@openLuup.local images@openLuup.local can be associated with I_openLuupCamera1.xml, which spawns a movement detector child. Anything similar for the other email addresses?

[akbooer]

You have been doing your homework!

I need to remind myself of what I did way back when before being able to reply sensibly.

But thanks for the excellent analysis.

[akbooer]

@a-lurker said in openLuup email server:

To keep things so they are more likely to work, it's suggested the email address should be totally case insensitive regardless.

Yes. I see from the ource code comments tht eraly-on I removed address wrapping to lower case. It's an easy change, but I'm going to find out why I did that in the first place, before reverting.

@a-lurker said in openLuup email server:

Is it your preference to leave the saved files in the raw mode or would you consider translating the base64 text in the openLuup code base?

Don't see why not. Again, I need to dig in to see why that isn't working out of the box. There's plenty Base64 decoding going on within the server anyway.

@a-lurker said in openLuup email server:

On a side note, does the reception of an email by openLuup generate some sort of trigger that can be watched.

Your best bet would surely be to register a callback handler to listen for messages on a specific address?

I have another big project ongoing with some sort of a deadline at the start of December, so I'll need to leave things until then before I can get back to this code.

Thanks again for your documentation efforts. I did say I would provide a link from the openLuup app... perhaps in the footer, like there is for the forum?

[a-lurker]

"AK: Your best bet would surely be to register a callback handler to listen for messages on a specific address?"

Yep - that seems the most obvious method - just wanted to make sure I hadn't missed some other turn of events. With your own callback handler, you can clearly sort out any email encodings, etc.

On the Doco - Goggle doesn't seem to index github io pages. Seems to me you need to have some sort of URL redirect, that looks like say https://smarthome.community/openluup, that would get indexed? ie via the web server set up or similar.