Invalid credentials for relay when relaying alert emails from QlikView Management Console (QMC) to smtp-relay.gmail.com

[Daniele_Purrone]

Alert emails from the QlikView Management Console are relayed to smtp-relay.gmail.com.

Emails are not delivered, and the sender address gets a "Mailbox unavailable. The server response was: 5.7.1 Invalid credentials for relay [IPADDRESS]." 

Environment:

QlikView 

Resolution:

This is not an issue with QlikView, but with Gmail's server configuration: https://support.google.com/a/answer/6140680?hl=en

"Invalid Credentials for relay: 

The IP address you registered in the G Suite SMTP relay service setting doesn’t match domain of the account this email is being sent from. If you are trying to relay mail from a domain that isn’t registered in your Googles Apps account, you must configure your mail server either to use SMTP AUTH to identify the sending domain or to present one of your domain names in the HELO or EHLO command. See SMTP Relay service setting for more information."

This needs to be sorted out with Google's support.