[Bug 1215882]

[L-stephan]

In case the server responds with a 550 Thunderbird correctly shows an
error message to the user and goes back to the edit window, so you can
resend the message.

If it would do the same in the case of a 4XX all would be good.

Should be an easy fix.

-- 
You received this bug notification because you are a member of Mozilla
Bugs, which is subscribed to Mozilla Thunderbird.
https://bugs.launchpad.net/bugs/1215882

Title:
  Emails are silently discarded on 554 reply to STARTTLS

To manage notifications about this bug go to:
https://bugs.launchpad.net/thunderbird/+bug/1215882/+subscriptions