我有来自this article的话语码头安装。话语工作正常，但我无法发送邮件。
我已经尝试this article进行故障排除而没有运气。
我的设置是。
## TODO: The mailserver this Discourse instance will use
DISCOURSE_SMTP_ADDRESS: smtp.zoho.com # (mandatory)
DISCOURSE_SMTP_PORT: 587 # (optional)
DISCOURSE_SMTP_USER_NAME: xxxxx@xxxxxx.in # (optional)
DISCOURSE_SMTP_PASSWORD: xxxxxxxxx # (optional)
##
当我检查生产日志时，它会显示Unprocessable entry。
Started POST "/admin/email/test" for 106.51.227.84 at 2016-10-09 10:36:28 +0000
Processing by Admin::EmailController#test as */*
Parameters: {"email_address"=>"geekceeaim@gmail.com"}
Sent mail to geekceeaim@gmail.com (1430.7ms)
Completed 422 Unprocessable Entity in 1871ms (Views: 0.7ms | ActiveRecord: 1.1ms)
请帮帮我。
提前致谢。