Controller Mail Server

[Kirk-GH]

Hi,

First off. Great work and thank you very much.

Secondly, is it possible for the mail server settings in the controller to send email notifications? I have put in the same settings as I have in my nas which works just fine.

Any assistance would be grateful.

Thanks,
Kirk

[mbentley]

Thanks! Yes, email works as one would expect. If there are any mail failures, you might want to check to see if there are any rules that would prevent email coming from a container that could show up against an ACL as an IP address that isn't allowed or anything like that related to the controller running in a container.

[Kirk-GH]

Thanks for the prompt response. I did fail to mention that I am running the container in my Synology nas. Are there maybe some environment variables I would have to include?

[mbentley]

I do not know how your mail server is configured to send mail but there shouldn't be anything special about Omada Controller running in a container in terms of how to setup mail. If you give me some details about how you typically send mail, I might be able to help.

[Kirk-GH]

Hi. Here are my settings for nas and for Omada. There is no access control list that I know of.

Nas Settings

Omada Settings

Thanks again,
Kirk

[mbentley]

Check the logs of the omada controller container. It will output detail information about what is happening with the SMTP test. Are you filling in a Sender Address?

[Kirk-GH]

I'm new to Docker. Totally forgot about the logs. Thanks. I have tried with the sender address entered and also not.

Kirk

[mbentley]

Are you sure that your Synology settings are correct? Normally SMTP over TLS/SSL is 465 or 587 although I suppose they could be listening over TLS on 25. I'm on my phone or I'd check by doing a test connection.

[Kirk-GH]

Totally agree with you. These values work for my nas settings.

[Kirk-GH]

Ok, well, no worries. I'll keep at it. I don't mean to take up too much of your time.

I really appreciate you assisting. I'll post back once I figure it out.

Kirk

[mbentley]

Yeah, I would try using port 587 with SSL and see how that works out for you. I did some more poking around and I was able to get the same error message when I ticked the SSL box when I was connecting to a non-TLS/SSL enabled port but that doesn't match the instructions on the screen shot from Bell but I suppose that wouldn't be the first time documentation wasn't completely correct and I also wouldn't put it past the TP-Link team to have implemented something funny in how SMTP works. I don't have a TLS enabled mail server here locally otherwise I would test that as well.

[Kirk-GH]

Ya, I tried all different ports already. 25, 465, 587, etc. As I said, it works coming directly from my nas with the same/proper setup. It really has to be something about not getting out of the docker (edit)in Synology that is. I have no problem giving you my email credentials should you feel you want to do some testing.

[Kirk-GH]

Well, as you said, something funny. I unchecked SSL and it sent. Probably should have tried that before but why would I if it works as expected with SSL from other applications.

I'm really sorry for wasting so much of your time. Hopefully this can be helpful (try the unexpected) to anyone else searching.

I appreciated your prompt responses and again thank you for your work.

[mbentley]

There are some other comments on some oddities of the SMTP implementation over on the TP-Link forums as well where they mention the issues with StartTLS not working properly.

[kylaris]

I fixed this issue by opening up the Synology firewall on port 465 / docker IP
I'm using smtp.google.com port 465
Also added 465 in the docker port setting.