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[Kevin]

@giacomosilli

Also in the log that I posted I read “ nError: Too Many Recipients ”, are we sure it’s a configuration problem?

That sounds like your Mailgun account is restricted, I’d suggest contacting their support.

Too many recipients error while sending email newsletter using Mailgun

The problem was with mailgun. Their automated system accidentally marked my account as suspicious, imposing some limit on the number of emails that can be sent from the account. I created a support ticket and the issue was resolved after their verification. This was the reply from Mailgun After further review, your account was automatically placed on an evaluation period [1], which limits the account in various ways such as this. To help protect our customers against spam, we have automated…

We can look at hoisting that error message up through the error stack so it’s not lost in the logs.