On Feb 14, 2006, at 2:44 PM — 2/14/06, H. Stephen Wright wrote:

> I have a subscriber who gets HTML digests.  For the last couple of
> weeks, he gets this message whenever he tries to open an e-mail
> containing the digest:
>
> "Error trying to validate certificate from listserv.indiana.edu using
> OCSP - unauthorized request"
>
> He says he gets the same error when he tries to view messages in the
> list's archives.
>
> I've switched him over to plain text digests, which I hope will
> ameliorate the problem ... but does anyone know why a certificate  
> would
> be involved in just looking at a digest?

The web server that hosts your list uses SSL (secure sockets layer)  
to encrypt connections. I suspect the subscriber who brought this  
issue to your attention is using a web browser that is not up to  
snuff as far as certificate handling is concerned. The subscriber  
should try another web browser, or make sure he is using the latest  
version of his preferred web browser.