邮件退信
我的系统发到外部的邮件基本上都被退回，前天刚换了个邮件的公网IP，第一天还运行正常，第二天就恢复老样子了，查询黑名单服务网站，只有five-ten 把我们的IP列入黑名单了，其他的组织没有，也不知道怎么申诉了。1.The following recipient(s) could not be reached:
username@aisgz.edu.cn on 25/02/2009 08:02
There was a SMTP communication problem with the recipient's email server.
Please contact your system administrator.
<computername.domainname.local #5.5.0 smtp;554 Service unavailable; Client host my ip address] blocked using zen.spamhaus.org; http://www.spamhaus.org/query/bl?ip=my ip address>
2.The following recipient(s) cannot be reached:
username@sbcglobal.net on 2/25/2009 8:14 AM
The message cannot be delivered due to a configuration error on the server. Please contact your Administrator.
<computename.domainname.local #5.3.0 smtp;553 5.3.0 flpi191 - n1P0Dlhi025245, DNSBL:ATTRBL 521< my ip address>_is_blocked.__For_information_see_http://att.net/blocks>
3.There was a SMTP communication problem with the recipient's email server. Please contact your system administrator.
<computername.domainname.local #5.5.0 smtp;550 Rejected due to the sending MTA's poor reputation. Please refer http://mail.sina.com.cn/help2/rwmail.html>
1.确认A记录、MX与反向解析有没有同步变更。
2.上http://www.spamhaus.org网页查询是什么原因被加入黑名单，再做相应处理或申诉。
3.联系收件方，争取将你的邮箱或服务器加入收件方的白名单。
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