This is the mail system at host smtp3.osuosl.org.

I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can delete your own text from the attached returned message.

The mail system

andreaitagut1@hotmail.com: host hotmail-com.olc.protection.outlook.com[52.101.8.53] said: 550 5.5.0 Requested action not taken: mailbox unavailable (S2017062302). [DS3PEPF0000C381.namprd04.prod.outlook.com 2025-01-27T00:21:59.864Z 08DD3E41821CE862] (in reply to RCPT TO command)