Net::SMTPAuthenticationError when sending email from Rails app (on staging environment)
I had the same problem: emails were sent from development, but not from production (where I was getting Net::SMTPAuthenticationError
).
This drove me to conclusion that the problem was not with my app's configuration, but with Google.
Reason: Google was blocking access from unknown location (app in production)
Solution: Go to http://www.google.com/accounts/DisplayUnlockCaptcha and click continue (this will grant access for 10 minutes for registering new apps). After this my app in production started sending emails ;)
Solved! I simply changed password for my gmail account and somehow errors disappeared.
After dozen of changes, the final settings I ended up with are:
config.action_mailer.delivery_method = :smtp
config.action_mailer.default_url_options = { :host => "my.ip.addr.here" }
config.action_mailer.smtp_settings = {
:address => "smtp.gmail.com",
:port => 587,
:domain => 'my.ip.addr.here:80',
:user_name => "[email protected]",
:password => "my_email_password",
:authentication => :plain,
:enable_starttls_auto => true
}
This solution is working for me:
config.action_mailer.delivery_method = :smtp
config.action_mailer.default_url_options = { host:'localhost', port: '3000' }
config.action_mailer.perform_deliveries = true
config.action_mailer.raise_delivery_errors = true
config.action_mailer.default :charset => "utf-8"
config.action_mailer.smtp_settings = {
:address => "smtp.gmail.com",
:port => 587,
:domain => 'localhost:3000',
:user_name => "[email protected]",
:password => "password",
:authentication => :plain,
:enable_starttls_auto => true
}
It's true that Google will block your sign-in attempt but You can change your settings at https://www.google.com/settings/security/lesssecureapps so that your account is no longer protected by modern security standards.
go to following link and turn on https://www.google.com/settings/security/lesssecureapps
The above solution provided the correct settings (which I already had) but did not solve the issue. After continued attempts, I kept getting the same error. Turns out, I had to "clear the CAPTCHA" from the web. See the gmail documentation for details.
You can also jump right to the "clear the CAPTCHA" page here.