退信分析_专业邮件中继，反垃圾网关，海外邮件中继，邮件中继转发服务，邮件中继服务器

·552-5.7.0 This message was blocked because its content presents a potential secu	[2016-5-20]
·Unable to find the recipients email server. The DNS query has failed	[2016-5-20]
·550 xu-hua@fagerdala.com.cn:domain locked	[2016-5-20]
·553 mail.amassfreight.com does not accept mail from	[2016-5-19]
·550 Not verified by SPF	[2016-5-19]
·554 5.7.1 : Recipient address rejected: Access denied	[2016-5-19]
·554 5.7.1 The message matches a profile the Internet community may consider spam	[2016-5-19]
·550 permanent failure for one or more recipients	[2016-5-19]
·550 5.7.1 Unable to deliver to	[2016-5-19]
·554 sender is rejected	[2016-5-19]
·554 5.7.1 You are not allowed to connect by Symantec Security Center	[2016-5-18]
·421 Read data from client error	[2016-5-18]
·550 SC-001 (COL004-MC6F26) Unfortunately, messages from xx weren't sent	[2016-5-18]
·553 you don't authenticate or the domain is not allowed relay	[2016-5-14]
·450 4.3.2 try again later	[2016-5-14]
·554 Transaction failed	[2016-5-13]
·451 4.7.0 Temporary server error. Please try again later. PRX4	[2016-5-12]
·There was a timeout while talking to the remote server	[2016-5-12]
·503 Error: need EHLO and AUTH first !	[2016-5-12]
·421 5.7.1 rejected	[2016-5-12]
·550 5.7.1 Recipient rejected (R4)	[2016-5-11]
·550 Unknown local part	[2016-5-11]
·550 Deliver to local org only	[2016-5-11]
·550 5.7.606 Access denied, banned sending IP	[2016-5-11]
·552 Message size exceeds maximum permitted;552 5.3.4 Error: message file too big	[2016-5-10]
·500 5.0.0 Service unavailable	[2016-5-9]
·501 This server will not accept forged credentials	[2016-5-9]
·550 Sender frequency limited	[2016-5-9]
·553 can't verify FROM domain in DNS；domain does not exist	[2016-5-9]
·450 Client host rejected: cannot find your hostname	[2016-5-9]

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