This is the mail system at host mailrelay02.thaicloudsolutions.com. 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 : host eur.olc.protection.outlook.com[52.101.73.25] said: 550 5.5.0 Requested action not taken: mailbox unavailable (S2017062302). [AM2PEPF0001C714.eurprd05.prod.outlook.com 2025-01-18T22:46:36.025Z 08DD372FCEF7C43A] (in reply to RCPT TO command) : host hotmail-com.olc.protection.outlook.com[52.101.68.19] said: 550 5.5.0 Requested action not taken: mailbox unavailable (S2017062302). [DB5PEPF00014B98.eurprd02.prod.outlook.com 2025-01-18T22:46:39.488Z 08DD3712E864A305] (in reply to RCPT TO command) : host hotmail-com.olc.protection.outlook.com[52.101.68.13] said: 550 5.5.0 Requested action not taken: mailbox unavailable (S2017062302). [DB1PEPF000509F9.eurprd02.prod.outlook.com 2025-01-18T22:46:40.343Z 08DD378FD35B247F] (in reply to RCPT TO command) : host hotmail-com.olc.protection.outlook.com[52.101.68.13] said: 550 5.5.0 Requested action not taken: mailbox unavailable (S2017062302). [DB1PEPF000509F9.eurprd02.prod.outlook.com 2025-01-18T22:46:40.359Z 08DD378FD35B247F] (in reply to RCPT TO command) : host hotmail-com.olc.protection.outlook.com[52.101.68.13] said: 550 5.5.0 Requested action not taken: mailbox unavailable (S2017062302). [DB1PEPF000509F9.eurprd02.prod.outlook.com 2025-01-18T22:46:40.374Z 08DD378FD35B247F] (in reply to RCPT TO command) : host hotmail-com.olc.protection.outlook.com[52.101.68.13] said: 550 5.5.0 Requested action not taken: mailbox unavailable (S2017062302). [DB1PEPF000509F9.eurprd02.prod.outlook.com 2025-01-18T22:46:40.406Z 08DD378FD35B247F] (in reply to RCPT TO command) : host hotmail-com.olc.protection.outlook.com[52.101.68.13] said: 550 5.5.0 Requested action not taken: mailbox unavailable (S2017062302). [DB1PEPF000509F9.eurprd02.prod.outlook.com 2025-01-18T22:46:40.421Z 08DD378FD35B247F] (in reply to RCPT TO command) : host outlook-com.olc.protection.outlook.com[52.101.42.8] said: 550 5.5.0 Requested action not taken: mailbox unavailable (S2017062302). [CO1PEPF000044F0.namprd05.prod.outlook.com 2025-01-18T22:46:40.542Z 08DD371B06DC961F] (in reply to RCPT TO command) : host outlook-com.olc.protection.outlook.com[52.101.42.8] said: 550 5.5.0 Requested action not taken: mailbox unavailable (S2017062302). [CO1PEPF000044F0.namprd05.prod.outlook.com 2025-01-18T22:46:40.573Z 08DD371B06DC961F] (in reply to RCPT TO command)