Rails ActionMailer: Problems Delivering with MailGun

Emails send successfully with Gmail but fail via MailGun. Below is a revised MailGun setup and mailer snippet:

MailerSettings.configure({
  host: "smtp.mgapi.com",
  port: 587,
  username: "[email protected]",
  secret: "mg_secret",
  domain: "mg.example.com",
  secure: true
})
class AlertDispatcher
  def send_notification(recipient)
    puts "Dispatching email to \\#{recipient.email}" 
  end
end

The configuration appears correct at first glance, but I encountered a similar issue when switching to MailGun. In my case, adjusting the server endpoint solved the problem. I noticed that using a different domain parameter or verifying the account status in MailGun made a difference. Additionally, double-checking that the credentials exactly match the ones in the MailGun dashboard is crucial. Testing with a simple SMTP client may help isolate whether the issue lies with ActionMailer or the MailGun service itself.

hey, i had similar issues with mailgun ports. try using 2525 instead of 587 and double-check your creadentials. sometimes ssl settings or account flags can also mess things up. hope this helps!