IP、域名被拒。
Delivery from xxx.xxx.xx.xxx is rejected. Your email could not be delivered to the intended recipient as your IP address is blacklisted. For details, visit:https://:https://:xxxxx/search?q/search?q=xxx.xxx.xx.xxx. 这串返回日志,除了熟
“Delivery from xxx.xxx.xx.xxx is rejected. Your email could not be delivered to the intended recipient as your IP address is blacklisted. For details,
visit:https://:https://:xxxxx/search?q/search?q=xxx.xxx.xx.xxx.”
这串返回日志,除了熟悉,是不是还包含着你的恐惧?
可能你内容合规,地址列表健康,发送频率正常,但…
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拦截状态码示例:
5.7.1 Service unavailable,
Client host [xxx.xx.xxx.xxx] blocked using Spamhaus. To request removal from this list see https://www.spamhaus.org/query/ip/xxx.xx.xxx.xxx (AS3130).
SpamHaus是一个国际性的非营利组织,主要追踪垃圾邮件及相关的安全威胁,有实时的黑名单技术。他们会将垃圾邮件的来源分析并归类到四大数据库:1. Spamhaus Block List (SBL); 2. Exploits Block List (XBL); 3. Policy Block List; 4. Domain Block List。SpamHaus可以说是业内影响力最大,被应用最多的组织。
Proofpoint
拦截状态码示例:
Blocked - see https://ipcheck.proofpoint.com/?ip=xxx.xx.x.xx
Proofpoint是一家美国的网络安全公司,为企业提供SaaS服务。如果你向苹果系邮箱或企业邮箱发送邮件比较多的话,应该对它不陌生。
Spamcop
拦截状态码示例:
其他
(Messagerejected-see
https://www.spamcop.net/bl.shtml?xxx.xxx.xxx.xx)
Spamcop是一种垃圾邮件的报告服务,有自己的实时黑名单,目前已被思科收购。发海外邮件较多的话,对它应该比较熟悉。
Barracudacentral
拦截状态码示例:
IP、域名被拒(5.7.1 Service unavailable; Client host [xxx.xx.xxx.xxx ]blocked using b.barracudacentral.org
; Client host blocked using Barracuda Reputation, see http://www.barracudanetworks.com/reputation/?r=1&ip=xxx.xx.xxx.xxx )
Barracudacentral,梭子鱼,是美国的一家提供包括邮件安全和归档、WEB应用安全、负载均衡等产品的网络应用厂商,在我国有分支机构。
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