Dovecot docker container

McKenna · October 16, 2021 at 7:42 PM

Sorry for writing the post in German. I wasn't aware.

I'm Andreas and new to the forum. I'm using libreELEC already for a long time and up to now I could solve my problems on my own.

Now I came up with the idea to run a local e-mail server on my HTPC. My HTPC can be started by LAN wack-up without problems. That is enough for my use. Just as local storage for not having all e-mail on the net. I want to access from various clients in the local network.

I installed dovecot in a container and it is running.

My problem: I cannot access the container from my clients. It looks like libreELEC rejects the IMAP access (no access to 192.xx.xx.xx possible).

Does somebody of you have a similar setup or knows the reason for the problem?

Regards

Andreas

Hallo,

ich bin Andreas und neu hier im Forum.

LibreELEC verwende ich schon einige Jahre und bin bisher immer selber mit meinen Problemchen durch gekommen.

Jetzt bin ich auf die Idee gekommen meinen HTPC auch als lokalen E-mail server zu verwenden. (Er lässt sich problemlos per LAN wecken und das würde mir für den Zweck reichen.)

Nur als storage, um nicht alle mails im Netz zu haben und von verschiedenen clients im Heimnetz zugreifen zu können.

Ich habe dovecot als docker container installiert und der läuft auch.

Mein Problem: Ich kann von meinen clients nicht auf den container zugreifen. Scheinbar verweigert libreELEC den IMAP Zugriff (kein Zugriff auf 192.xx.xx.xx möglich).

Hat einer von Euch so ein setup am laufen oder kennt den Grund für das Problem?

Gruß

Andreas

**Da Flex** · October 16, 2021 at 8:00 PM

Bitte editiere Dein Posting, indem Du es ins Englische übersetzt. Wir akzeptieren keine andere Sprache.

Es gibt einige Docker-Projekte in unserem Showcase-Subforum, die vielleicht hilfreich sind.

**chewitt** · October 17, 2021 at 5:26 AM

Two things come to mind. First, LE has a local firewall that can be enabled. Second, the ports aren't mapped in the container configuration.

McKenna · October 17, 2021 at 2:14 PM

Hi chewitt,

thanks for the hint. I checked: firewall is disabled and the ports in the configuration file are correct.

**Da Flex** · October 18, 2021 at 5:42 AM

Did you read the pinned Docker info on top of this sub-forum?

McKenna · October 18, 2021 at 7:27 PM

Hi Da Flex,

yes I did read the pinned thread and that was how installed dovecot in a container via portainer.

I did re-read it today.

I found out that I can connect to the dovecot container using telnet once I'm connected to libreELEC by SSH.

ssh root@192.xx.xx.xx

then telnet 172.xx.xx.xx 143

gives a postive answer from dovecot.

An IMAP client request from Thunderbird to 172.xx.xx.xx returns "192.xx.xx.xx connection refused".

Any ideas?

**Da Flex** · October 19, 2021 at 11:21 PM

Which start command do you use for the container? As you can see at the pinned post, there is a -p option for port mapping.

**aptalca** · October 20, 2021 at 12:52 PM

172.x.x.x is a docker network IP. What you need to do is map the ports you need, so they can be addressed at the 192.x.x.x ip, which is the host (libreelec) ip

McKenna · October 22, 2021 at 2:35 PM

Hello aptalca and Da Flex,

thanks for supporting - that did the trick.

I had to re-create the container in portainer, adding the ports to the existing one did not work.