Errno::ECONNREFUSED: Connection refused - connect(2) for action mailer - ruby-on-rails

Question

I have been working with rails since a long. Now I am facing a small issue in the ActionMailer. I want to send an email when user gets registered to confirm his registration.
I am able to send email in the development mode but where as not in the production mode.
the exception Errno::ECONNREFUSED: Connection refused - connect(2) is coming everytime when deliver method is called.
I have written the following code.
My SMTP config looks:
config.action_mailer.default_url_options = { :host => "localhost:3000" }
config.action_mailer.delivery_method = :smtp
config.action_mailer.perform_deliveries = true
config.action_mailer.raise_delivery_errors = true
config.action_mailer.smtp_settings = {
:openssl_verify_mode => OpenSSL::SSL::VERIFY_NONE,
:ssl => true,
:enable_starttls_auto => true, #this is the important stuff!
:address => 'smtp.xxxx.xxx',
:port => xxx,
:domain => 'xxxxxx',
:authentication => :plain,
:user_name => 'xxxxxxx#xxx.xxx',
:password => 'xxxxxxxxx'
}
In the controller, I have written the following:
def confirm_registration_in_c
#user = User.find_by_email(asdf123#gmail.com)
if #user
UserMailer.confirm_registration(#user).deliver
end
end
In my user_mailer.rb :
class UserMailer < ActionMailer::Base
default from: "from#example.com"
def confirm_registration(user)
#user = user
#user_name = #user.name
email = #user.email
mail(:to => email, :subject => "Reset your password")
end
end
I am able to send email in the development mode in my local host, but I am not able to send the email in the dedicated server.
Can anybody help me please?

Answer 1

In my situation, I encountered similar problems when I was trying to making through a sending-email Rails app tutorial, the Heroku logs kept telling my that
......
Errno::ECONNREFUSED (Connection refused - connect(2) for "localhost" port 25):
......
After I compared my code with author's code, I got to find out that I had not setup my ActionMailer configurations in the config/environments/production.rb file.
Then I came to realized that I just had my config/environments/development.rb configured for sending-email, but I had not done it for my config/environments/production.rb.
So you may check it when your app's behavior difers between development and production.

Answer 2

Be sure you have configured your port correctly. I switched from gmail in development (port 587) to sending from my local server in production and was getting this error till I corrected the port to the one my server uses (port 25).

Answer 3

My problem is not identical to this question, but I feel many would found this thread via google.
If you use external SMTP service like sendgrid and has set up ActionMailer accordingly, yet it still gives this error:
Errno::ECONNREFUSED: Connection refused - connect(2) for "localhost" port 25
You may be passing config hash with String key, which are ignored. Keys must be symbols!
This may happen if it is de-serialized, what I did is to ensure keys are symbols:
config.action_mailer.smtp_settings = get_smtp_setting.symbolize_keys

Answer 4

for production you cant write
config.action_mailer.default_url_options = { :host => "localhost:3000" }
add production url for host, like,
config.action_mailer.default_url_options = { :host => "http://www.yourdomain.com" }

Answer 5

There is another reason for this error:
Errno::ECONNREFUSED: Connection refused - connect(2) for "localhost" port 25
It should be looked at SENDMAIL service on your server:
Is SENDMAIL installed?
Is SENDMAIL running?
I had this error due to the stopped SENDMAIL.
Good luck!

Answer 6

I had a similar issue with SendGrid and repeated Errno::ECONNREFUSED: Connection refused - connect(2) ) Finally I modified the way smtp settings were set by changing the definition within /config/environments/production.rb
from:
ActionMailer::Base.smtp_settings = {
to:
config.action_mailer.smtp_settings = {
this did the trick.

Answer 7

I just tracked down a similar problem while trying to deploy wordpress with Capistrano.
cap aborted!
Errno::ECONNREFUSED: Connection refused - connect(2) for "{my-ip-address}" port {my-ssh-port}
I would also get this similar error:
Tasks: TOP => git:create_release
(See full trace by running task with --trace)
The deploy has failed with an error: #<Errno::ECONNREFUSED: Connection refused - connect(2) for "my-ip-address" port {my-port}>
It turns out it was an issue with concurrent SSH sessions as my server runs Fail2Ban. To solve that I simply did the following:
Edit the jail that contains SSH configurations
$ sudo nano /etc/fail2ban/jail.local
look for [SSH] and set enabled = false
then find [ssh-ddos] and set enabled = false
Remember to restart Fail2Ban after your changes and open-ssh (if thats what your using)
$ sudo service fail2ban reload
$ sudo /etc/init.d/ssh reload
Its worth noting that the connection would be refused at different steps (tasks) in the deployment. For example after a reboot and a quick bundle exec cap production deploy:check everything appeared fine. Then I tried to deploy and received the same error, but during the execution of a different task. I also use UFW which I disabled and reenabled without issues. UFW was not the cause of the above problem.
I had a similar problem after I solved this. It was an issue with the current directory permissions. That's over here.

Answer 8

You may see a similar error message when using turbo_stream in rails 7 (or while doing the rails 7 demo).
If you do, run this and everything should work:
redis-server
More info here.