On Sun, 2010-05-16 at 00:52 +0100, Matthew Sackman wrote:
After many hours of testing, I've finally tracked down the issue I have been having with dovecot's SSL support. The problem is that the SSL certs result in "TLS handshaking: SSL_accept() syscall failed: Connection reset by peer" errors *if the certificate granted is not granted for client use*.
Most likely client decided that the cert wasn't valid and disconnected.
If you just do that, then the SSL certificate doesn't work in dovecot (it will work fine in Apache, or Postfix etc etc). You also need the certificate to be valide for client side work: .. I believe this is a fault with Dovecot.
Maybe it's just that the email clients don't like it, while web browsers don't care as much? Although I'd guess email clients also wouldn't like Postfix..
Anyway, I don't really know what I could do about this. Except add a check to log an error if keyUsage doesn't contain digitalSignature, but I don't know if that's a good idea either.