mail delivery system是什么意思

mail delivery system是什么意思 Mail Delivery 发了邮件后收到Mail Delivery System发过来的英文邮件,发了邮件后收到Mail Delivery System发过来的英文邮件Mail Delivery System<MAILER-DAEMON@mx2-198.sinamail.sina.com.cn>This is the mail system at host mx2-198.sin e-mail-delivery是什么意思 mail delivery subsystem是什么意思啊? the fuel delivery system是什么意思 英语翻译Mail Delivery System》Undelivered Mail Returned to SenderThis is the mail system at host mail.w-sky.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 as Mail delivery failed:returning message to sender This message was created automatically by mail delivery software (Exim). Delivery Delivery 我用Yahoo发邮件的时候受到一封这样的信件.信头是这样的Delivery Notification:Delivery has failedInternet Mail Delivery People call this mail service Rural Free Delivery.(变为被动语态) 24.Sending ____ special delivery costs about 15 times as much as sending it regular delivery.A.a mail B.mails C.a piece of mail D.pieces of mailmail不可数吗? mail 英语翻译A:what delivery arrangements did you make for the file?Q:I sent it by express mail. This is the mail system at host mail3-21.sinamail.sina.com.cn. This message was created automatically by the mail system (ecelerity).A message that you sent coul