Hi,
just from start i did the following steps: 1.) Our DNS provider has secured the domain veka.com with DNSSEC: http://dnssec-debugger.verisignlabs.com/veka.com 2.) I’ve computed "openssl x509 -in mail.veka.com.crt -outform DER | openssl sha256“ the 256bit hash from the complete certificate chain which is used by Postfix as well. 04459a87d803ee5d2450114c09e8370dc51b27716431378cfa5560e153aed957 3.) Our DNS provider has added this to the domain and has signed it again (no idea why there is a blank!). _*._tcp.mail.veka.com. 3600 IN TLSA 3 0 1 04459A87D803EE5D2450114C09E8370DC51B27716431378CFA5560E1 53AED957 4.) I am still getting the error https://dane.sys4.de/smtp/veka.com In TLSA 3 0 1 should be correct, right? I ma using the whole certificate chain for the hash, the same certificate file i’ve configured within Postfix. _*._tcp.mail.veka.com. should be also working! So what might be the problem now? Kind regards! Frank -- Frank Fiene IT-Security Manager VEKA Group Fon: +49 2526 29-6200 Fax: +49 2526 29-16-6200 mailto: [email protected] http://www.veka.com PGP-ID: 62112A51 PGP-Fingerprint: 7E12 D61B 40F0 212D 5A55 765D 2A3B B29B 6211 2A51 Threema: VZK5NDWW VEKA AG Dieselstr. 8 48324 Sendenhorst Deutschland/Germany Vorstand/Executive Board: Andreas Hartleif (Vorsitzender/CEO), Dr. Andreas W. Hillebrand, Bonifatius Eichwald, Elke Hartleif, Dr. Werner Schuler, Vorsitzender des Aufsichtsrates/Chairman of Supervisory Board: Ulrich Weimer HRB 8282 AG Münster/District Court of Münster
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