问HN：微软365的支持还有希望吗？
我所在的公司（25friday.com）在Microsoft 365邮箱上似乎遭遇了关键词黑名单的影响。
简而言之，如果我们向使用Microsoft 365作为邮箱提供商的客户发送任何包含“25friday.com”文本内容的邮件，无论是在邮件主题、正文还是可读附件（例如PDF）中，这些邮件都会落入“黑洞”，既不会被退回，也无法送达收件人（它们也不在垃圾邮件或隔离区中）。
正如您可以想象的，这对我们来说是一个巨大的问题，因为电子邮件是我们与客户沟通的主要方式，我们必须小心，确保在发送给他们的任何邮件中都不提及我们的域名。
对于使用个人Outlook邮箱的收件人，邮件会被接收，但会被标记为垃圾邮件，垃圾邮件评分为9（最高分）。
我们已经联系了Microsoft支持，但他们似乎和我们一样无能为力。他们不知道为什么会发生这种情况，也无法提供任何信息或对这一持续问题的进展。这种情况已经持续了大约一个月。
我们尝试过的一些措施包括：
- 我们检查了我们的SPF、DKIM和DMARC记录，发现它们都设置正确并且通过了验证。
- 我们检查了我们的邮件发送声誉，尽我们所知是良好的。
- 我们尝试从不同的邮箱地址和域名发送邮件，但问题依然存在。
- 我们设置了自己的Microsoft 365账户，以便能够在安全门户上提交误报报告，但提交的报告消失在虚空中，我们从未收到任何反馈。
- 我们尝试了一些可送达性测试工具，结果都显示我们的邮件被Microsoft 365阻止，但没有其他邮箱提供商阻止。
- 我们没有出现在任何已知的公共黑名单上。
请注意，我们正在使用Google Workspaces，但这似乎不是问题所在。该域名自2018年（公司成立以来）就已经上线，我们之前从未遇到过邮件送达的问题。我们不发送垃圾邮件或未经请求的邮件。我能想到的最接近的情况是我们有一个大约300名订阅者的邮件列表，主要包含客户的电子邮件，也包括一些我们邀请参加活动的人的电子邮件。我们大约每月向这个列表发送一次新闻通讯，但之前从未收到过任何投诉或问题（我们使用Pipedrive进行此操作）。
虽然这可能是一个旁支问题，但我认为可能与此相关：如果我在LinkedIn个人资料上将我的网站地址设置为25friday.com，该链接会被覆盖为LinkedIn错误页面。我的猜测是，由于LinkedIn是微软拥有的，他们共享同一个黑名单。
如果您有任何建议，我们将不胜感激。我们真的受到这个问题的影响，并且没有任何途径来升级此问题。
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The company I work for (25friday.com) has been hit with what seems to be a keyword blacklist on Microsoft 365 email.<p>In short, if we send out any email to clients using Microsoft 365 as their email provider containing the textual content "25friday.com" anywhere on the email subject, body or readable attachment (e.g. pdf) the emails fall on a "blackhole" and are neither bounced nor reaching the recipient (they are not in spam or quarantine either).<p>As you might imagine this is a huge problem for us as email is our primary means of communication with our clients and we need to be careful to never include any mention of our domain in any email we send to them.<p>For recipients using personal Outlook emails, the emails are received and sent to spam with a spam score of 9 (maximum score).<p>We've reached Microsoft support and they seem as clueless as we are. They have no idea why this is happening and they are unable to provide any information or progress on the ongoing issue. This has been going on for about a month now.<p>A few things we have tried:<p>- We have checked our SPF, DKIM, and DMARC records and they are all set up correctly and passing.<p>- We have checked our email sending reputation and it is good as far as we can tell.<p>- We have tried sending emails from different email addresses and domains, but the issue persists.<p>- We have setup our own Microsoft 365 account to be able to submit false-positive reports on the security portal, but the submissions disappear into the void and we never receive any feedback.<p>- We have tried some deliverability testing tools and they all report that our emails are being blocked by Microsoft 365, but not by any other email providers.<p>- We are not on any known/public blacklists<p>Note that we are using Google Workspaces, but that does not seem to be the issue. The domain itself has been live since 2018 (since the company was founded) and we have never had any issues with email deliverability before. We don't send spam or unsolicited emails. The closest I could think of is a mailing list we have with about 300 subscribers containing mostly client emails but also some emails of people we invite to our events. We send out an approximately monthly newsletter to this list, but we have never had any complaints or issues with it before (we're using Pipedrive for that).<p>Tangential but I believe that it might be related: if I set my website address as 25friday.com on my LinkedIn profile, the link gets overwritten to a LinkedIn error page. My guess is that since LinkedIn is owned by Microsoft, they are sharing the same blacklist.<p>Any tips would be greatly appreciated. We're really affected by this and without any recourse to escalate this issue.