How to check if sending emails via docker - exim works?

Question

Exim

Docker is installed on the server.
CMS bitrix.
When I try to send a letter in the event table, I see SUCCESS_EXEC=Y
So everything seems to be ok, but letters do not come to any mail.

launched the console: echo "Testing" | mail -s Test [email protected]
in response: -bash: mail: command not found
climbed to the server, everything is configured there via docker (I generally zeroed in it, I encountered it for the first time), I see that there is an exim folder in the docker folder

Here's how to test sending? how to check status of exim?
perhaps it needs to be run separately and it is disabled or not configured

in the run.sh file, the contents are as follows:

docker stop my-exim
docker rm my-exim

docker run --name my-exim \
    --detach \
    --restart always \
    --net my-net \
    -e TZ=Europe/Moscow \
    --volume ~/docker/etc/exim/exim.conf:/etc/exim/exim.conf \
    extteam/exim:fedora33

found command docker ps
shows that exim is running

58cdd9136535   extteam/exim:fedora33        "exim -bd -v -q30m"      5 months ago   Up 4 days   25/tcp                                     my-exim