我发给某位客户的电子邮件一直被退回。我今天发了两封电子邮件,同一封发到了客户 .com 域中的两个邮件地址。第一封发到了,[email protected]
被退回了。第二封发到了[email protected]
,(到目前为止)没有被退回的迹象。
我收到的退回邮件是:
This message was created automatically by mail delivery software.
A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:
[email protected]
host in.hes.trendmicro.com [54.219.191.1]
SMTP error from remote mail server after RCPT TO:<[email protected]>:
550 5.7.1 <[email protected]>: Recipient address rejected:
ERS-RBL.
Action: failed
Final-Recipient: rfc822;[email protected]
Status: 5.0.0
Remote-MTA: dns; in.hes.trendmicro.com
Diagnostic-Code: smtp; 550 5.7.1 <[email protected]>: Recipient address rejected: ERS-RBL.
现在,那条退回信息表明它拒绝了我的客户的电子邮件地址,但当我查找错误 550 5.7.1 时,它似乎表明错误在于我的 SMTP 服务器被列入黑名单。
我已在黑名单中查过它们,结果都是清白的。
有可能是某个电子邮件地址(而不是整个域名)被列入了黑名单吗?我在哪里可以查找到这些信息?
答案1
这是 TrendMicro 的黑名单交易。他们在某个时候检测到了来自该 IP 的垃圾邮件,并决定将其列入黑名单。您可以在此处查看:https://www.ers.trendmicro.com/reputations
如果有错误,请获取新的 IP 或请求他们将其从黑名单中删除。