Hi, so if I understand you correctly you want to create one file that contains more than one CA certificate and can be installed onto Windows, Mac, etc.? You only can do that if you create a p12 file and that must contain a leaf certificate and its private key. openssl pkcs12 -export -in out/X.crt -inkey out/X.key -chain -out out/X.p12 You can check the openssl pkcs12 help for more arguments. Best regards, Ben 2015-12-12 22:23 GMT+01:00 Dominik Mahrer (Teddy) <teddy at teddy.ch>: > Hi everyone > > My question is: > How can I set up a bundle of commercial root CA certificates? > Exactly this the same question I found as FAQ # 16 (User). But as answer > there is only explained that openssl will not serve a bundle. But it is not > explained how to set up a bundle - but exactly this I would like to know. > > Thanks in advice > Teddy > > -- > Teddy Engineering GmbH http://www.teddy.ch/ > Lettenmattstrasse 5 mailto:teddy at teddy.ch > 8903 Birmensdorf ZH +41 32 511 07 48 > > > > _______________________________________________ > openssl-users mailing list > To unsubscribe: https://mta.openssl.org/mailman/listinfo/openssl-users >