应对垃圾注册邮件
自己整网站真的是各种烦恼，才把SMTP搞定，又面临一个新的问题，那就是垃圾邮件，我使用SMTP2GO开通了SMTP服务后，确实是能注册了，然后很快SMTP2GO就发邮件警告我一天发的邮件数量太多，暂停一天，突然我才意识到问题的严重性。其实这些垃圾注册用户，根本就不是真的来我的网站看内容的，而是通过我的网站，来实现另外一个功能，那就是
看看有哪些垃圾邮箱吧，事实上我都删了不少了：
SMTP2GO后台一看，更多：
为什么？
Ghost的官方更新日志里面提到，有很多短信业务会使用个人网站作为跳板去发送邮件，所以官方开发了这个Spam filters功能。
Signup spam protection - Ghost Changelog
Recently, many publishers have noticed an increase in bulk signup-spam from SMS services such as txt.att.net – leading to large numbers of fake member accounts being registered on their websites. On Ghost(Pro) we proactively monitor and block spam signups like this automatically as a part of our managed service whenever we spot patterns of abuse across our network. Now, we’ve also introduced a new spam filtering as a setting in Ghost – allowing publishers di…
Ghost
下面这篇帖子详细说明一些情况，也就是说有人会通过邮件到短信网关，把邮件发送至手机上，
Ghost sign up and spam?
Been seeing the same thing. I delete them as soon as I see them.
BruceInLouisville
There has indeed been an increase in spam signups across multiple Ghost sites originating from email domains like tmomail.net and txt.bell.ca.
These domains serve as email-to-SMS/MMS gateways, converting emails into SMS or MMS messages delivered to phone numbers.
下面这篇文章也提到了，邮件服务商SendGrid于2024年就停止了all email to SMS gateway traffic，也提到AT&T官方也于2025年停止了相关服务。
Email to SMS Gateways Are Going Away. How to Keep Your Alerts Working with Twilio Programmable Messaging
Keep legacy alerts working and replace email-to-SMS gateways with a SMTP server that sends SMS via Twilio.
Yukti Ahuja
实践案例
下面这篇文章作者也面临这个头大的问题，他认为是有人通过他的网站去完成手机号码的验证。
Blocking Spam Email Domains with Self-Hosted Ghost
I noticed an uptick in spam signups on my self-hosted Ghost instance. Specifically those coming from email to SMS gateways[1]. I suspect that they use the email address to send a text message to verify the phone number. I’m not sure how many people actually use these but given
Nish Tahir如何处理，这里有两个方案：
