退信原因：接收方的邮箱容量已满，不能继续接收邮件。

退信原因：接收方的邮箱容量已满，不能继续接收邮件。

Results (English) 1:

Reason
for bounced mail : The recipient's mailbox capacity is full and cannot continue to receive mail.

Results (English) 2:

Reason for withdrawal:
The recipient's mailbox capacity is full and cannot continue to receive mail.

Results (English) 3:

Reason for returning the letter:
The mailbox capacity of the receiver is full, so you can't continue to receive messages.