退信提示：“mailbox 123@abc.com is restricted。”
2019-10-23 13:55:00
退信提示：“The email account that you tried to reach does no exists.”
2019-10-23
2010-07-30
2016-07-06
退信提示：“Host abc.com(xxx.xxx.xx.xx) MAIL FROM said 451
2019-10-23