Are addresses temporary?

Matthew Blissett matthew at
Tue Nov 20 22:29:13 UTC 2007

On Monday 19 November 2007 16:22:11 MJ Ray wrote:
> Reinhard Mueller <mueller at> wrote:
> > While I don't think I've ever seen a mail server distinguishing between
> > emails that email addresses that have been deleted and email addresses
> > that simply did never exist, I agree that it could be helpful.
> In exim4, it is possible to do :fail: Custom error message as the
> alias return value - I've used it quite often on some systems,
> particularly for frequently-made typos.

It seems Postfix can do the same, or at least something similar:

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