Here is the google mail servers: https://support.google.com/a/answer/176600?hl=en#...
I'm going to check everything, thank you for your time Daniel!, great Job and congratulations...
I found: Whatever you are using to submit test messages is not waiting for the server...
I launched: ./xsibackup --backup-point=/vmfs/volumes/backup --backup-how=hot --backup-type=custom...