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Mailgun SSL issues

Jan 23, 2018

We use Mailgun for sending emails from our systems, and today we were having problems with connectivity to the service.

It turns out Mailgun had updated their SSL certificates (without telling anyone!) and our cacert.pem file was out of date, so it wasn’t recognising the newer certificates.  Having updated the file everything is now working fine again.

For more information on this topic, see the links below:

https://stackoverflow.com/questions/2694787/how-can-i-set-curlopt-cainfo-globally-for-php-on-windows

http://status.mailgun.com/incidents/0y2g8f3cvvz5