To preface I am new to all this, Linux, MailCow, SOGo, Docker, containers, etc.
I have an internal lab setup so my mailcow is using a .local FQDN since this is just to be used for internal testing.
I have setup a virtual Linux 18.04 server to host mailcow and I have setup docker, docker-compose, mailcow, curl, etc all according to this video: https://www.youtube.com/watch?v=4rzc0hWRSPg
I followed everything shown in the video and it all came back looking good. I can get on a separate win10 I have setup in my lab environment and access the mailcow server via http://X.X.X.X/. I setup the domain as a .local and added mailboxes but when I launch the webmail and log into one of the mailboxes I get the error pop-up.
I looked up another thread on here that mentioned adding the following commands so I did that and got the same error:
source mailcow.conf
MAILCOW_BRIDGE=$(docker-compose config | grep -i com.docker.network.bridge.name | cut -d’:' -f2)
while read NAT_ID; do
iptables -t nat -D POSTROUTING $NAT_ID
done < <(iptables -L -vn -t nat –line-numbers | grep $IPV4_NETWORK | grep -E ‘MASQUERADE.*all’ | grep -v ${MAILCOW_BRIDGE} | cut -d’ ' -f1)