553 Mail from 61.185.81.172 not allowed - VS99-IP1 deferred - see help.yahoo.com/help/us/mail/defer/defer-02.html
5. Optionally, add a comment to your submission.
你需要补充的说明
6. Send the form to us:
点击“SEND
Yahoo!, and survey partners working on behalf of Yahoo!, may contact me to participate in customer satisfaction surveys.
（这句弄不懂是什么意思，接下来估计一段时间以后，对方会发送邮件到你上面填写的邮件地址，说明有关的情况，或者24小时以后自己做有关的测试，看能否发送邮件到YAHOO.COM）
隔段时间yahoo会有回信（回信内容如下）：
Hello,
Thank you for contacting Yahoo! Customer Care.
We would appreciate it if you could provide more information to help us
troubleshoot the issue.; Please note that if you are not the system
administrator for the mail server(s) affected, we encourage you to
contact the administrator so they can address the possible issues
regarding mailings from the mail server.; Please reply to this email
with the following information:
* Explain the details of one event with the delivery problems to Yahoo!
Mail. Please provide the entire message, including the full text of the
error message returned, and full header information.
Within a Yahoo! Mail account, you can display this information by
clicking the "Full Headers" link located within the message in the
bottom right-hand corner.
* The specific server_domain name and IP address of the email server(s)
that have the delivery issue to Yahoo! Mail.
IP Address:; xxx.xxx.xxx.xxx
Mail Server Domain Name:; server_name.domain.com
* Log messages from your mail server showing which IP you connected to
and what responses you got from the remote server at the time you
received the corresponding failures/timeouts for the event you are
reporting.
* The results from a plain text message, sent to Yahoo! Mail, without
HTML, links, graphics or attachments, from the server having delivery
issues. Is the email delivered to Yahoo! Inbox?;
We appreciate your assistance. This information will be helpful in
determining the reason why you are having issues when delivering mail
to
Yahoo! Mail accounts.
Thank you again for contacting Yahoo! Customer Care.
Regards,
Thomas Immer
Yahoo! Customer Care
27861806
然后你按他们的要求回复一下就可以了：
内容如下：
IP Address:; 服务器的IP
Mail Server Domain Name:; 邮箱的域名,我的是mail.xxxx.com
我上次问了一下yahoo中国的朋友，他告诉我，将以上的内容填写在下面的页面“问题描述处：
http://help.cn.yahoo.com/feedback.html?product=mail
Yahoo中国邮箱客户服务部电话：010-65833721
八.为什么发附件到gmail返回552 5.7.0 Illegal Attachment错误信息？
作为预防可能存在的病毒的一种安全手段，Gmail 不允许用户接收可能包含破坏性可执行代码的可执行文件（例如文件名以 .exe 结束的文件）。即使这些类型的文件以压缩格式（.zip、.tar、.tgz、.taz、.z、.gz、.rar）发送，Gmail 也不会接收。如果有任何这种类型的邮件发送到了您的 Gmail 帐户，该邮件会退回发送方。
解决办法：将exe文件改名，或者将压缩文件改名。
比如test.ex_，或者test.zip_
九.为什么发往21cn的邮件会被退回？并且包含这样的类似退信信息“553 Mail data refused by AISP, rule [2640449].
1.如果您的邮件里包含了可执行文件，21cn会拒收。如果要发送可执行文件附件，建议先压缩成zip文件。详细信息请咨询21cn(http://free.21cn.com/huodong/email.html)
2.21CN的反垃圾邮件措施是什么？
a) 系统要求smtp身份认证，以确认发信人身份
b) 接收外域邮件时，当每封收件人超过20个，系统将拒收该邮件
c) 邮件软件中加入反垃圾邮件模块
d) 针对用户投诉和管理员搜集的与垃圾邮件有关的IP和关键字，经技术分析后加以拒收
3.21cn已对动态域名如(3322.org)建立的邮件服务器进行了拒收。请注意。
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