[exim-dev] [Bug 2147] Random callout check causes actual ACL…

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Autor: admin
Datum:  
To: exim-dev
Alte Treads: [exim-dev] [Bug 2147] New: Random callout check causes actual causes ACL to defer
Betreff: [exim-dev] [Bug 2147] Random callout check causes actual ACL to defer
https://bugs.exim.org/show_bug.cgi?id=2147

--- Comment #8 from Jeremy Harris <jgh146exb@???> ---
No, but try 2137.

> Obviously, the random callout is supposed to just be an optimisation, to avoid

callouts for subsequent specific localparts.

Not quite. It's to find out whether the target gives reliable information
at RCPT time, or just accepts everything blindly. Certainly it'll have the
effect you describe, should blind-acceptance be discovered - but that only
tells
us that attempting to do callout verification is pointless. It'll result in us
later spending resources on an actual message transmission, which is hardly an
optimisation.

> We should never defer the
> acceptance of *this* localpart, just because the random callout got a 4xx
> response.


I disagree.

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