If you would rather send application email via an SMTP server instead of via Sendmail, add the following configuration information to /etc/gitlab/gitlab.rb and run gitlab-ctl reconfigure.
gitlab_rails[‘smtp_enable‘] = true gitlab_rails[‘smtp_address‘] = "smtp.server" gitlab_rails[‘smtp_port‘] = 456 gitlab_rails[‘smtp_user_name‘] = "smtp user" gitlab_rails[‘smtp_password‘] = "smtp password" gitlab_rails[‘smtp_domain‘] = "example.com" gitlab_rails[‘smtp_authentication‘] = "login" gitlab_rails[‘smtp_enable_starttls_auto‘] = true # If your SMTP server does not like the default ‘From: gitlab@localhost‘ you # can change the ‘From‘ with this setting. gitlab_rails[‘gitlab_email_from‘] = ‘gitlab@example.com‘
To change GitLab CI email configuration (e.g. use SMTP), use gitlab_ci instead of gitlab_rails.
# in /etc/gitlab/gitlab.rbgitlab_ci[‘gitlab_ci_email_from‘] = ‘gitlab-ci@example.com‘gitlab_ci[‘smtp_enable‘] = truegitlab_ci[‘smtp_address‘] = "smtp.server"# etc.
原文：http://my.oschina.net/wangchongya/blog/485579