Our Engineers are currently investigating an issue sending mail using 3rd party email clients such as Outlook or Apple mail on the Grid Service platform. It appears that sending email via webmail is unaffected; only 3rd party email clients seem to be affected. We hope to have this resolved shortly and we will update this post with more information as it becomes available. In the meantime, you still have the ability to send email via webmail on your service. We apologize for the inconvenience and we thank you for your patience.