Re: [Exim] Reaction to rude 554 greeting

Matthew Byng-Maddick wrote:
> On Tue, Mar 18, 2003 at 11:29:36AM +0100, Florian Weimer wrote:
>
>>Matthew Byng-Maddick <exim@???> writes:
>>
>>>With issues like this, I'm not so completely sure. I think that all
>>>in all 821 is a better standard. I think that returning 554 as a
>>>greeting on a public-facing MX is probably pretty stupid. Giving an
>>>RST is so much better.
>>
>>The BSD sockets API doesn't allow for sending a RST to selected peer
>>addresses. You have to accept the connection to get the peer address.
>
>
> I appreciate this. I think that if you're sending 554 based on who is
> connecting then you're an enemy of reliable mail delivery. Either an
> SMTP service runs, in which case, it should speak SMTP, and adhere to
> the protocol, or it doesn't in which case, you've RST the connection.

Hmmm, not really, because we had the discussion today .....

What about outgoing/fallback only servers, which only accept mails from
a handful of other servers?

Noone should connect to them, but if it happens, they should be rejected
nicely.

Nico