Ticket module - Failed to send mail (sender=robot@domain.com)

Hi to all!

I am new in this community and I’m apricating your help.

I am having problems with tickets module for sending mail.
“Failed to send mail (sender=robot@domain.com, receiver=xxxxxxxxxx@gmail.com)”
Not getting the specified email address info@********.com from “Outgoing emails (for module Ticket)”

This notification is only when I try to send mail form on of the thickets.

Setup/Emails/Outgoing emails (for module Ticket) is configurated correctly. ( used generic mail info@*******.com)
Test server connectivity = OK
Test Sending = OK (I’m receiving mail)

Can’t figure it out this problem. Every other module is working correctly for sending email.

Many thanks if someone can help .