Autor: Thomas Hochstein Datum: To: exim-users Betreff: Re: [exim] retry rules help...
"Adam Bown" schrieb:
> * if the primary MX IS available but says "550 User unknown", I'd like
> to bounce the message immediately (so induce a permanent failure).
That should be done automatically. 5xx is a permanent error, so no
retry should occur.