ietf-nntp TLS response codes

[Ken Murchison]

Russ Allbery wrote:
> 
> Yeah, but does the server return an error message?  I think we're trying
> to figure out if there's a reason to have the server send a 580 error
> message *after* the TLS negotiation if something failed, or if that's all
> handled at the TLS level and already covered by the existing language.

I don't know what SHOULD be done, but here's what I know:

- Cyrus returns an error in its IMAP, POP3, LMTP (and NNTP)
implementations if TLS can't be setup of the negotiation fails.

- INN returns 580 in both cases.

- UW-IMAP appears to return errors in both cases.

- Sendmail appears to return a temp failure if TLS can't be setup and
closes the connection of negotiated fails.

-- 
Kenneth Murchison     Oceana Matrix Ltd.
Software Engineer     21 Princeton Place
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