I have had Gmail POP3 polling running since January using the App password method. No issues and all has been going great. I upgraded from 3.5.0.beta7-dev to 3.5.0.beta8-dev. I immediately received the following error in my admin panel: Connection to the POP3 server is failing with an authenticati…

Gmail POP3 轮询在升级到 3.5.0.beta8-dev 后失败

NateDhaliwal (NateDhaliwal) 2025 年7 月 6 日 12:00 4

Anything in /logs, or any errors in the mail account?
Also, does anything in here help?

话题		回复	浏览量
Connection to the POP3 server is failing with an authentication error. Please check your POP3 settings Support	6	4080	2022 年7 月 26 日
Gmail POP3 needs an app password nowadays Support	2	916	2022 年6 月 9 日
POP3 polling stopped working Support	18	2809	2020 年6 月 30 日
Gmail POP3 authentication failed — switch to application password Support	6	1343	2019 年3 月 22 日
Email polling error with Google Apps Support	11	2587	2016 年7 月 25 日