A Guard server error occurred with HTTP status code 500
I already searched this forum and Google for this topic; no results. Probably someone had a similar error?
What did I do?
I created a PGP key pair with GPA and uploaded the public key to mailbox.org (Settings / Guard Settings / Guard PGP Settings). The new key was already marked as Current (I assume, this is the key to use for signing).
Where is the problem?
Now, when I try to send an email, signed with this key, this fails with the following error message:
A Guard server error occurred with HTTP status code 500. Error message: Internal Server Error
If I switch back to the original PGP key, sending a signed mail works fine. Switching forward again to the GPA created key brings the same issue.
Internal server error is of course the max. descriptive error message ;) Any comments are welcome.