MailCloud Returned Mail (退信通知): 550-5.7.1 [220.130.127.163 18] Gmail has detected that this message is5.7.1 likely suspicious due to the very low reputati

From: no_reply@p.mailcloud.com.tw
Domain: IP info p.mailcloud.com.tw
MX-server: IP info p4q.mail2000.com.tw
Size: 546 Bytes
Create: 2025-01-28
Update: 2025-01-28
Score: 0
Safe: Yes

The original message was received at Tue, 28 Jan 2025 16:02:13 +0800 (CST) from zinc1@phucmmo.com ---The following addresses had delivery errors--- calvin.sun@gmail.com [550-5.7.1 [220.130.127.163 18] Gmail has detected that this message is5.7.1 likely suspicious due to the very low reputation of the sending IP5.7.1 address. To best protect our users from spam, the message has been5.7.1 blocked. For more information, go to 5.7.1 https://support.google.com/mail/answer/188131 98e67ed59e1d1-2f7ffa38806si11747126a91.40 - gsmtp]