Cannot be used with VPN

[ghost]

Checklist

• I have used the search function to see if someone else has already submitted the same bug report.
• I will describe the problem with as much detail as possible.

App

Thunderbird for Android

App version

8.2

Where did you get the app from?

None

Android version

15

Device model

No response

Steps to reproduce

1. vpn
2. login mail
3. failed to connect to imap.gmail.com/ 142.251.2.108 (port 993) from /10.8.40.88 (port 56498) after 30000ms: isConnected failed: ECONNREFUSED (Connection refused)

Expected behavior

I suspect the reason is that Thunderbird does not use 127.0.0.1 (port 56498)..

from /10.8.40.88 (port 56498)

Actual behavior

failed to connect to imap.gmail.com/ 142.251.2.108 (port 993) from /10.8.40.88 (port 56498) after 30000ms: isConnected failed: ECONNREFUSED (Connection refused)

Logs

No response

[cketti]

This is a network error, not a bug in Thunderbird.

A non-exhaustive list of possible reasons:

• VPN is not properly configured on the device
• VPN is blocking certain connections
• Google is blocking connections from the VPN provider

I don't think there's anything we can do. Please contact your VPN provider.

[ghost]

I set proxy all app in VPN.

Gmail website and Gmail apps work fine.

Thunderbird doesn't go through VPN. This is a problem with Thunderbird.

[kewisch]

It is possible that the Gmail app uses their API via https and not IMAP, which would explain that circumstance. Can you test a random other email client that uses IMAP? You may need to configure your VPN to allow tunneling port 993.