Mail alert not working after migrating to GitLab docker

The email alert not working when we add members into the repository, they are not getting mail alerts after migrated the GitLab in to docker using the image gitlab/gitlab-ce.

Hi,

please provide some more details about the environment. How is the MTA for SNMP configured, are there any insights the the system’s log with regard to sending emails? Which version of GitLab is involved, check /help.

Cheers,
Michael