mailcow failing docker-compose

rikksullenberger

I am trying to get mailcow to install with no luck. It is running on a new system populated docker system on Debian 11.

When I run docker-compose up -d I get the following error..

⠿ Network mailcowdockerized_mailcow-network Error 0.0s
failed to create network mailcowdockerized_mailcow-network: Error response from daemon: Pool overlaps with other one on this address space

I am running the following ports:

8888 8989 9117 6881 7878 8080
8388 9000 6789 5055 6555 8096
80 81 443 8000 9443

I changed the port in the mailcow config file to : http_port=8888, and https_port=4443 http_bind and https_bind are blank.

accolon

This means that the IP address range used by mailcow is already in use. Are you running other Docker containers?

By default, mailcow uses the 172.22.1.0/24 subnet. You can change this with IPV4_NETWORK in your mailcow.conf.

rikksullenberger

Yes, I have other containers running on that server.

Do I create an additional network in Docker and put mailcow on that network?

rutman286

rikksullenberger I am trying to do this same thing. I would really like my mailcow server to be on an 802.q network since I have other services on the same machine that conflict.

rikksullenberger

rutman286

I went into mailcow.conf and changed IPV4_NETWORK, to 172.22.30.1 (IPV4_NETWORK=172.22.30.1) this worked on my system.

rikksullenberger

I created a new network and it worked. Thank you much for your help!

rutman286

rikksullenberger That makes sense if you have other things operating on the bridge network and you need to move the IP range. I want to use the MACVlan driver instead of a bridge…. but I’m a bit of a novice at docker and haven’t figured out how to implement that with mailcow specifically.