環境說明

作業系統版本：
Debian GNU/Linux 8 (jessie)

核心版本：
3.16.0-4-amd64

gitlab版本：

# cat /opt/data/site/gitlab/VERSION
8.9.0-pre

執行元件：
Unicorn + Sidekiq + Workhorse

操作步驟

第一步
http://blog.itpub.net/28624388/viewspace-1755425/

第二步

vim /opt/data/site/gitlab/config/gitlab.yml

    # Email account username
    # With third party providers, this is usually the full email address.
    # With self-hosted email servers, this is usually the user part of the email address.
    user: "
 
[email protected]"
    # Email account password
    password: "[REDACTED]"

    # IMAP server host
   host: "imap.gmail.com"
    # IMAP server port
    port: 993
    # Whether the IMAP server uses SSL
    ssl: true
    # Whether the IMAP server uses StartTLS
    start_tls: false

第三步 重啟

/etc/init.d/gitlab restart