sergio wrote:
> Hello Bernd,
> 
> Wednesday, November 8, 2006, 12:45:51 PM, you wrote:
> 
> > Hallo.
> 
> > Am Mittwoch, 8. November 2006 10:22 schrieb sergio:
> > > I think, I didn't explaine clear my problem...
> > > I want to configure Courier don't send the messages with 550
> > > error if resieve mail to nonexistent recipient. Thats all.
> 
> > I think still noone knows what you want. :)
> 
> > The normal behaviour is:
> > * someone connects to your esmtd-server.
> > * the sender tells your server to which recipient the message
> > should be   delivered 
> > * your server decides if the recipient is acceptable and then
> >   - replies with 220 Ok if it's valid
> >   - replies with 5xx if any error occures
> 
> > So what do you want?
> > - The error _message_ should be any other ("550 any error") so that
> >   the sender does not know which error occured
> > - The error shall be temporary ("450 user unknown") so that
> > delivery is   retried later 
> > - The server should accept the message and do anything with it
> 
> > Or what do you want?
> 
> I want, if it's possible, that the server does't accept a message, but
> don't send any error messages. :)

Your server is not sending any error messages, you are simply telling
the other server why you will not accept the message.

If you just close the connection without giving a reason, the other
server will assume you are having network problems and will treat it
the same as a 4xx temporary failure and continue to retry for 5 to 7
days.  If you give a permanent failure code (5xx), the other server
will know that you will never accept the message and it will not
retry.

-- 
Bowie

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