==== Required information ====
- iRedMail version (check /etc/iredmail-release):
- Linux/BSD distribution name and version:
- Store mail accounts in which backend (LDAP/MySQL/PGSQL):
- Web server (Apache or Nginx):
- Manage mail accounts with iRedAdmin-Pro?
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

Rails SMTP Setting for iredmail does not work. I tested SMTP with Thunderbird and its working, can anyone please help in fixing this.

Code used from rails..

settings = {
      :address => 'mail.ourdomain.tk',
      :port => 587,
      :domain => 'client.com',
      :user_name => @smtp_address,
      :password => @smtp_password,
      :authentication => :plain,
      :enable_starttls_auto => true
    }