ietf-nntp TLS response codes

[Russ Allbery]

Ken Murchison <ken at oceana.com> writes:
> 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.

Okay, cool.  So we'll just standardize 580 as the error code for that.

-- 
Russ Allbery (rra at stanford.edu)             <http://www.eyrie.org/~eagle/>