Cannot ssh to server as I install poste.io on OVH dedicated server

Question

I'm a beginner in docker and poste.io. I want to install poste.io with docker on my server . Poste.io & Docker installed without problem and running fine but when my connection dropped and I try ssh to server again my connection will be timed out and cannot connect to server .

docker command :

docker run \
    -p 25:25 \
    -p 9925:80 \
    -p 110:110 \
    -p 143:143 \
    -p 9926:443 \
    -p 465:465 \
    -p 587:587 \
    -p 993:993 \
    -p 995:995 \
    -v /etc/localtime:/etc/localtime:ro \
    -v /root/mailserver/data:/data \
    --name "mailserver" \
    -t analogic/poste.io