Bug#388460: exim4-daemon-light: sender verification is not working

Marc Haber mh+debian-packages at zugschlus.de
Thu Sep 21 12:56:01 UTC 2006


On Thu, Sep 21, 2006 at 01:11:17PM +0200, Marc Haber wrote:
> And that's the same address you want to fail verification?

No, it is not. After you answered my question in private e-mail (on
purpose?), I now understand the issue. Finally. Sorry for being so
slow on the mark.

We'll need to think about a way to support sender verification on a
system that uses a smarthost. Andreas' suggestion is a possible
solution, but we'll need to bring our minimaldns configuration option
in the game: We might be using a smarthost because we do not have
world-wide DNS available.

Probably the most promising idea would be to only activate the
"smarthost_verify_dnslookup" router if minimaldns is not set and to
warn in the config that sender/recipient verification on a
smarthost-based system with minimaldns set is likely to generate false
negatives (verifying false addresses as correct).

Andreas, what do you think about that?

Greetings
Marc

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