Incoming Email: cannot open mailbox

[nebulon]

If you open a webterminal into your app instance you can try telnet mail 9595 to see if telnet is able to connect on the pop3 port. You should see this:

root@c5a31d99-2479-4c15-9f9f-b10ed96a3886:/app/code# telnet mail 9595
Trying fd00:c107:d509::4...
Connected to mail.
Escape character is '^]'.
+OK Dovecot (Ubuntu) ready.

[pHneutre]

@nebulon I get exactly that (except for the IP address ofc).

[nebulon]

huh an yet if ou use 9595 with mail as the host in discourse you still get timeouts?

[pHneutre]

@nebulon
Yes:

What do you exactly mean by "with mail as the host in discourse" ? My Discourse settings are as above. Host is the default one (my) :

[nebulon]

Ah try mail as the hostname instead of the dashboard domain. This would resolve to the local IP of the mail server and not the external interface.

[pHneutre]

@nebulon This will move the whole cloudron instance's mail server to this name. Aren't there any references I should worry about when doing this? (we're hosting a bunch of services, I don't know all of them)

[nebulon]

Ah sorry, I might not have been clearly communicating. I was referring to the configuration within discourse, use mail there as the mail server host.

[jdaviescoates]

@pHneutre I could be wrong, but I think @nebulon is just suggesting that instead of my.solectic.cloud in the POP3 polling host field shown below, you just put mail

I could be wrong, but I don't think he's suggesting updating the Server location as per https://docs.cloudron.io/email#server-location

[pHneutre]

When changing POP3 polling host from my.soletic.cloud to mail (the name on the local network?), I get :

If I try mail.soletic.cloud (public address just in case?), I get:

[jdaviescoates]

I was just guessing, could easily be wrong. I guess @nebulon will have to be a little clearer/ more explicit about exactly what he's asking you to try

[nebulon]

Ah great so you were able to at least connect using mail as the hostname. That is the correct way to configure an app on Cloudron. This is also why the environment variables expose that alongside the authentication details, which is now what is apparently wrong in your case. The username and password are the ones in CLOUDRON_MAIL_IMAP_USERNAME and CLOUDRON_MAIL_IMAP_PASSWORD . Can you double check that you used those in discourse?

[pHneutre]

@nebulon FINALLY! the mail arrived. So, Discourse was not correctly configured, as for the POP3 host and password. Good to know, I'll document that internally.

Thanks a lot, I really appreciate the time and thouroughness!

[nebulon]

Glad it worked out in the end. It is probably not obvious also to use the credentials from the env variables which have IMAP in them....