Undelivered Mail Returned to Sender （2024.03.20）
This is the mail system at host smtp.kponet.fi.
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
said: 421-4.7.0 [213.145.209.38 21] Gmail has detected that this
message is 421-4.7.0 suspicious due to the nature of the content and/or the
links within. 421-4.7.0 To best protect our users from spam, the message
has been blocked. 421-4.7.0 For more information, go to 421 4.7.0
https://support.google.com/mail/answer/188131
jd20-20020a170903261400b001d717e60007si12488606plb.397 - gsmtp (in reply to
end of DATA command)
