Mail server settings

Mail server settings

hi, i'm new on Opmanager although I am nt having a lot of trouble, only this: when i configure the information to send notifications by e-mail, this message is shown:

Invalid Addresses; nested exception is: class javax.mail.SendFailedException: 550 5.7.1 Unable to relay for the " to ID email", this happens whenever i tried to send a test email, i'm working with the free version (up to 10 nodes) of Opmanager, is this the reason?? :D

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