Is Mailgun something that Sonar is using? I’m getting errors and that’s the only thing I can think of.
We’re aren’t using Mailgun but instead, Sonar uses Mandrill as our transactional email service for sending mail from your Sonar instance.
You mentioned that you’re getting errors? Please send an email with details regarding the errors to firstname.lastname@example.org and our team is more than happy to take a look at this for you.