I use thunderbird through vpn to my work site. I am required to use two accounts, one to login to thunderbird and download messages and a separate smtp password to send… (Lesen Sie mehr)
I use thunderbird through vpn to my work site. I am required to use two accounts, one to login to thunderbird and download messages and a separate smtp password to send messages.
After logging into thunderbird, the first attempt to send a message works fine. It prompts me for my smtp account password and sends my message.
The second and subsequent times I try to send a message, I get the popup error:
```
The message could not be sent using Outgoing server (SMTP)
relay.xxxx.xxx for an unknown reason. Please verify that
your Outgoing server (SMTP) settings are correct and try
again.
```
The thunderbird error console reports:
```
mailnews.send: Sending failed;
The message could not be sent using Outgoing server (SMTP)
relay.xxxx.xxx for an unknown reason. Please verify that
your Outgoing server (SMTP) settings are correct and try
again.
exitCode=2153394004, originalMsgURI=
MessageSend.jsm:337:32
fail resource:///modules/MessageSend.jsm:337
_deliveryExitProcessing resource:///modules/MessageSend.jsm:687
sendDeliveryCallback resource:///modules/MessageSend.jsm:741
OnStopRunningUrl resource:///modules/MessageSend.jsm:1432
onerror resource:///modules/SmtpService.jsm:211
_onError resource:///modules/SmtpClient.jsm:510
```
Once I restart thunderbird, I can send a message again - exactly once.
Other mailer applications using vpn to connect to our mail system do not have this problem.
Thunderbird does not have this problem when I am connected directly to my site's internal network, not using vpn.
My thunderbird Outgoing Server configuration is:
```
Hostname smtp.xxxx.xxx
Port 25
Username xxxxx@xxxx.xxx
Authenticaton Method Normal password
Connection Security STARTTLS
```
Those settings are consistent with my site's requirements.
I'm using thunderbird 115.12.2 on a mac running macOS Sonoma 14.5.
This problem first surfaced when I upgraded from thunderbird 102.12.0 to 15.4.1.
It really acts like things are configured okay, because it was able to send one message, but then something gets stuck after that.
Thanks for any insights.