email - 诊断代码 : smtp; 451 Temporary local problem - please try later: retry timeout exceeded

Question

所以问题是与域连接的电子邮件帐户不起作用。也不发送或接收。

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:

  receiver@email.com
    host web.com 
    SMTP error from remote mail server after RCPT TO:<receiver@email.com>:
    451 Temporary local problem - please try later:
    retry timeout exceeded


Reporting-MTA: dns; relay1.stackmail.com

Action: failed
Final-Recipient: rfc822;receiver@email.com
Status: 5.0.0
Remote-MTA: dns; web.com
Diagnostic-Code: smtp; 451 Temporary local problem - please try later: retry timeout exceeded

我尝试使用 SPF v=spf1 include:_spf.google.com ~all 放置 DNS TXT 记录比我检查的域是否被列入黑名单。然后我尝试更新 ClamAV。那也没有帮助。
我也无法查看 mail-tester因为电子邮件不发送或接收电子邮件。域站点是在线和实时的。我首先认为它与DNS设置有关。
域来自一个提供商，而托管来自另一个提供商。不知道在哪里看，我花了 5 个小时试图找出发生了什么。在那个问题之前我已经升级了 PHP 版本，这可能是这背后的原因吗？

Answer 1

要更新，此问题已通过运行以下命令解决:
代码:
/scripts/mailperm
这在/etc/localdomains 文件中重新填充了一些丢失的域名。