#806 ✓duplicate
Keith Royster

S/MIME "Unknown format in import. Error code: -25257"

Reported by Keith Royster | June 9th, 2014 @ 12:27 PM

I'm a few days into my trial of MailMate and having trouble sending S/MIME encrypted messages. I can sign them successfully with my private key, but when I try to encrypt them with the recipient's public key, I get the following message in the yellow banner within the composer window:

  Unknown security problem for S/MIME message.
  An unknown problem concerning decryption or signature verification was detected.
When I click the button for more info, all I get is:
  Unknown format in import. Error code: -25257
My recipients' public keys are in my keychain and work correctly in mail.app. Any advice on what I might be doing wrong here?

Comments and changes to this ticket

  • benny

    benny June 9th, 2014 @ 12:31 PM

    • State changed from “new” to “duplicate”

    I believe this is a duplicate of ticket #658 which, unfortunately, is unresolved. I'll update that ticket soon (I recommend you “watch” it). I've been postponing it because I was out of ideas.

  • Keith Royster

    Keith Royster June 9th, 2014 @ 01:21 PM

    Sorry for the dup - I guess I didn't do the best job searching first...

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