Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Thunderbird hangs *after* sending message when VPN active - why?

  • 7 replies
  • 3 have this problem
  • 1 view
  • Last reply by PaVaJuAr

more options

Nord VPN lets me receive e-mails just fine, but since most recent updates of the VPN and/or Thunderbird I'm having this problem again. With VPN active, open Thunderbird. Incoming messages download just fine. Send first message, *then* Thunderbird hangs, and I have to force quit. This is Thunderbird 60.9.0 (64-bit) running on a mac under OS10.12.6, and using port 587 for SMTP. Thank you for your help, ---tad.

Nord VPN lets me receive e-mails just fine, but since most recent updates of the VPN and/or Thunderbird I'm having this problem again. With VPN active, open Thunderbird. Incoming messages download just fine. Send first message, *then* Thunderbird hangs, and I have to force quit. This is Thunderbird 60.9.0 (64-bit) running on a mac under OS10.12.6, and using port 587 for SMTP. Thank you for your help, ---tad.
Attached screenshots

Modified by Wayne Mery

All Replies (7)

more options

A hang is not a crash. have you left Thunderbird for an extended period of time 30 minutes to see if it actually does crash? Diagnosing a hang is almost impossible as it becomes a question of what action is Thunderbird waiting to complete. Something there is little access to. I would guess there is an issue with the VPN cutting of the send before it actually completes. You might learn more by logging the connection that sends the mail. https://wiki.mozilla.org/MailNews:Logging

more options

Thank you for this. I'll give that a try (waiting, logging, etc.) but will leave this open for now in case anyone else has any suggestions. ---tad.

more options

Sorry, I forgot to add, on another mac in the house (OS10.14.6), Thunderbird (60.9.0) does NOT have this problem sending mail while the VPN is active. Doesn't this militate against the VPN cutting off sending? Same VPN, same local network accessing the internet, just a slight diference in platform. ---tad.

more options
more options

Maybe. I need to try the mail logging. Reason I think this suggestion isn't the problem is that this behavior is not consistent. ---tad.

more options

Does it happen with version 68? https://www.thunderbird.net/en-US/

more options

Updating to version 68.4.1 solved the problem for me (win7 64 bit, PIA VPN connected to server in Denmark)