On 14.11.2014 11:10, Heiko Schlittermann wrote:
[...]
> Currently it seems that they are not able to reject at RCPT, they
> reject after DATA: "550 5.1.1 User unknown".
It is common/accepted knowledge on "the internet" that this issue can't
be changed and Exchange 2013 is just broken regarding callouts and can't
be fixed. However,
https://support.prolateral.com/index.php?/Knowledgebase/Article/View/204/35/how-do-i-reject-incoming-email-for-unknown-users-in-ms-exchange-2013
implies there is actually a solution.
I haven't tried it yet an I'm very curious if anyone can confirm this
procecure.
--
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