Mailgun isn't working

Greetings, I’ve been trying to send emails through Mailgun to multiple people using ghost but for some reason whenever I attempt to send the emails they keep failing. I’ve verified that all of the details are correct, is anyone able to assist me?

Thanks, greatly appreciate it

If you’re new to Mailgun, then they nay have placed a rate limit on your account.

It would be helpful if you shared your config, and if you could confirm if transactional mail via Mailgun works. Similarly, what happens if you send a newsletter to one or two recipients?

Greetings, I’m able to send test emails by selecting emails, and I already talked to Mailgun and they raised my rate limit, I can send 100 emails. I’ll have to ask for the config, I don’t have access to the server myself but the config should be set up.