Undelivered Mail Returned to Sender （2024.03.16）
This is the mail system at host dd33036.kasserver.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
gmail-smtp-in.l.google.com[142.251.168.27] said: 552-5.7.0 This message was
blocked because its content presents a potential 552-5.7.0 security issue.
To review our message content and attachment content 552-5.7.0 guidelines,
go to 552 5.7.0 https://support.google.com/mail/?p=BlockedMessage
o16-20020a05600c511000b00412d0519666si3801829wms.101 - gsmtp (in reply to
end of DATA command)
