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Subject: Undeliverable:
在我的邮件服务器发往163的邮件就出现这样的问题,这是什么原因?
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那位知道是怎么回事?
A mail message was not sent due to a protocol error. 550 System is busy. OLIAAHq0LD72AdCM.1(754) The message that caused this notification was: To: From: Subject: Undeliverable: 在我的邮件服务器发往163的邮件就出现这样的问题,这是什么原因?