exchange十种常见退信原因
第一名：收件人信箱爆了
�@�Ψ叫畔淙萘恳呀�超�^了，你能有什�N�k法，�]�k法的，以下�槌Ｒ�的�息
452 Message for **** would exceed mailbox quota
450 **** : out of quota
第二名：收件人不存在
�Ψ街�C根本�]�@��信箱，最常�的是打�e字了，�
User
�z查一下吧，以下�槌�
�的�息
451 Requested mail action not taken: mailbox unavailable
第三名：信件�^大，收件人伺服器拒收
一定是
User
的�]件�忍砑恿诉^大的附件�n造成，此�r�⒃斐墒占�方拒收此封�]件
421 The Size of the Message Exceeds the Recipient's Size Limits For Incoming Emails
450 5.2.3 Msg Size Greater Than Allowed By Remote Host
第四名：碰上�Ψ交颐��畏览�圾�C制
此一�N��r必�要第二次重寄才��成功，�]件�o法即�r寄�_，不�^�@要怪收件人主
�C而不是�F司的主�C，以下�槌Ｒ�的�息
451 4.7.1 Temporarily rejected. Try again later.
451 Resources temporarily unavailable. Please try again later.
450 4.7.1 **** : Recipient address rejected: Policy Rejection- Please try later.
450 4.7.1 **** : Recipient address rejected: Try again, see ****
451 DT:SPM ****, ****, please try again
421 ****, SMTP service not ready
第五名：垃圾信寄太多了
我����在不好������f，但您垃圾信可能真的寄太多了，收件者主�C已���r或永
久拒收你�]件了，以下�槌Ｒ�的�息
421 4.7.0 [GL01] Message from (*.*.*.*) temporarily deferred
452 Too many recipients received this hour
421 #4.4.5 Too many connections to this host.
550 5.7.1 Our System Has Detected an Unusual Rate of Unsolicited Mail Originating
From Your Ip Address. To Protect Our Users From Spam, Mail Sent From Your Ip Address
Has Been Blocked. Please Visit
Http://www.google.com/mail/help/bulk_mail.html
To
Review Our Bulk Email Senders Guidelines
第六名：�]件主�C
IP
�o法被反解
�@是
DNS
技�g上的���}，在台�持饕�
ISP
皆有所�^�A�O反解，主要�l生在�W�g�W
路或租用
IDC
�C房的�r候，必�要�得�O定反解，以下�槌Ｒ�的�息
421 Refused. You have no reverse DNS entry.
第七名：寄件者�]件地址打�e了
��兔Γ��B自己的�]件地址都打�e了，信��然寄不出去，�至�]件��w中做修正，
以下�槌Ｒ�的�息
451 Domain of Sender Address Does Not Resolve
第八名：收件人伺服器硬碟已�M
�@明�@不是你的�e�`，也不是你能管的，�告�V
User
打����去告知一下，以下
�槌Ｒ�的�息
452 Requested Action Not Taken: Insufficient System Storage
431 The Recipient's Mail Server Is Experiencing a Disk Full Condition
第九名：就是不�你寄
在�W路的世界�@�N歧�依然存在，就是不�你寄，一句�都不��f就�踉陂T外．通
常�@�c你的
IP
位置
�c
IP
反解的名�Q有�P
552 Sorry, We Don't Allow Mail From Your Host
554 Your Ip (*.*.*.*) Is Dynamic Ip Address, Use Your IspSmtp Server Instead
第十名：�]件�热荼痪�
很多主�C目前不接受特定的附件�n，如
.EXE
或
.ZIP
�@���r候就��有�]件被拒的
��r
554 5.7.1 The File Xxx Has Been Blocked. File Quarantined As:b100493a.xxx