It looks like Google has changed POP3 access and this has led to my instance failing to poll messages after running smoothly for 5 years. I found an older fix for this here: Gmail POP3 authentication failed — switch to application password . I followed the gmail link provided in order to switch the…

I recommend turning on 2FA on the account and setting up an App Password for Discourse. The policy change is about the “allow less secure app access” option being deprecated. More info on this here: Less secure apps & your Google Account - Google Account Help Starting January 2025, les…

Thank you, That’s now working :+1:. A warning for anyone else going through this - Google will likely fire off security alerts. The algos went as far as auto-dumping my first attempt :roll_eyes:. Check the inbox of the gmail account you’ve setup as you go through this process so you can confirm to…

Thanks @JammyDodger for pointing me towards this topic. I have the same problem that @Amicable reported here. Can I just check the process? I enabled 2FA on my gmail account. This then revealed/added the option for me to create App Passwords at https://myaccount.google.com/security I then cre…

I waited some time, this seems to have rectified itself. Thanks for the info here everyone :smiley:

Hopefully the delay/wait solves my issue also. It shows that it connected… [image] …but it’s still not yet showing anything new in Gmail Sent items. Error: 535-5.7.8 Username and Password not accepted

连接POP3服务器失败，出现身份验证错误。请检查您的POP3设置

支持

agungor 2022年六月7日 15:26 2

我建议在账户上启用双重验证 (2FA)，并为 Discourse 设置应用专用密码。政策变更涉及弃用“允许安全性较低的应用访问”选项。更多信息请参见：

Gmail POP3 needs an app password nowadays

Add richer authentication support for POP3

POP3 polling and SMTP sending both suddenly failing

Gmail POP3 Polling Failing after Upgrade to 3.5.0.beta8-dev

話題		回覆	觀看
Gmail POP3 needs an app password nowadays Support	1	1019	2022年六月9日
Gmail POP3 authentication failed — switch to application password Support	5	1510	2019年二月20日
Gmail POP3 Polling Failing after Upgrade to 3.5.0.beta8-dev Support email	4	209	2025年七月6日
Email polling error with Google Apps Support	10	2725	2016年七月25日
POP3 polling stopped working Self-hosting hosting	17	3142	2020年六月30日

连接POP3服务器失败，出现身份验证错误。请检查您的POP3设置

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