That's very helpful to know. Thank you for sharing! On Mon, Oct 13, 2025 at 2:41 AM Benoit Panizzon via mailop <[email protected]> wrote: > > Hi Team > > Some feedback on the issue in case others face the same. > > The customer whose emails got rejected re-opened the case at Microsoft > and pressured theme to come up with a solution as the emails being > rejected did not match how direct-send was supposed to work. > > It turned out the issue was that something got wrong with a recent > Exchange update on the tenant operating the sending domain. Microsoft > fixed the issue and now external emails sent from an SPF permitted > external ip range with the domain of an Exchange tenant do not get > rejected by all other exchange customers with: "Direct Send not allowed > for this organization from unauthorized sources" anymore. > > Mit freundlichen Grüssen > > -Benoît Panizzon- > -- > I m p r o W a r e A G - Leiter Commerce Kunden > ______________________________________________________ > > Zurlindenstrasse 29 Tel +41 61 826 93 00 > CH-4133 Pratteln Fax +41 61 826 93 01 > Schweiz Web http://www.imp.ch > ______________________________________________________ > _______________________________________________ > mailop mailing list > [email protected] > https://list.mailop.org/listinfo/mailop
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