GWAVA 4.xAll supported OS
This problem is due to GWAVA not being able to authenticate to the GWIA. This is because there is an incorrect username and or password in the server settings for the 'mail relay agent SMTP auth login name/password.'
The username there MUST be an actual GroupWise username, with accompanying password.
Note:GWAVA will attempt to send this message regardless of the authentication passing. But it will just send it through the GWIA and there is no guarantee that it will get through.