Mailing reports with AWS

Question

If you use AWS and try mailing a report to multiple emails it fails with:

Mailing Error Failed to send data [SMTP: Invalid response code received from SMTP server while sending email. This is often caused by a misconfiguration in Outbound Email settings. Please verify the settings at Administer CiviCRM >> Global Settings >> Outbound Email (SMTP). (code: 554, response: Transaction failed: Domain contains illegal character)]

Under Email Delivery, it does not like the comma in the comma separated format that is supposed to be used for multiple email addresses.

Answer 1

You can only put one email in the TO field but as many as you like in comma separated format in the CC field.

Not sure if there is configuration necessary in AWS to change this behavior but heads up for those on AWS.