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

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Gmail POP3 Polling Issue After Upgrade

LotusJeff experienced a POP3 authentication error after upgrading from Discourse beta7 to beta8, specifically when using an app password for Gmail with two-factor authentication (2FA). The error message reported a failing connection to the POP3 server. LotusJeff confirmed the app password was still valid within Gmail and recreated it, but the issue persisted. NateDhaliwal shared a link to a related Discourse meta post but LotusJeff indicated it wasn’_t helpful as they already used app passwords with 2FA. NateDhaliwal requested logs and error messages from the mail account, and shared a link to a troubleshooting guide here. Finally, LotusJeff reported that the email reply system retested and now worked without changes, attributing the fix to the upgrade.

1

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 authentication error. Please check your POP3 settings.

I have done the following:

  • Checked everything with Gmail. No issues visible.
  • Recreated a new app password. The original and the new one does not work.

Any suggestions on how to troubleshoot or do more investigations to determine the issue?

thanks in advance.

2

Hi there, does this help?

3

No, that does not help. I have had the “app password with 2FA” implemented since January.

It is the app password with 2FA that has stopped working.

Any other suggestions?

4

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

5

I retested email reply system this morning an now it is working. No changes. Nothing net new or different other than upgrade.

We will see if it throws another error code.