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. -- Karlsruher Institut für Technologie (KIT) Steinbuch Centre for Computing (SCC) Patrick von der Hagen Zirkel 2, Gebäude 20.21, Raum 005.1 76131 Karlsruhe Telefon: +49 721 608-46433 E-Mail: [email protected] Web: http://www.scc.kit.edu KIT - Universität des Landes Baden-Württemberg und nationales Forschungszentrum in der Helmholtz-Gemeinschaft
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