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| # Run this for each email account. The system must install the CA cert and the resulting p12 file in order to be happy. | |
| # Borrowed from http://serverfault.com/questions/103263/can-i-create-my-own-s-mime-certificate-for-email-encryption | |
| openssl genrsa -des3 -out smime.key 4096 | |
| openssl req -new -key smime.key -out smime.csr | |
| openssl x509 -req -days 365 -in smime.csr -CA ca.crt -CAkey ca.key -set_serial 1 -out smime.crt -setalias "Self Signed SMIME" -addtrust emailProtection -addreject clientAuth -addreject serverAuth -trustout | |
| openssl pkcs12 -export -in smime.crt -inkey smime.key -out smime.p12 |
Thanks so much @sm5050 !!
https://www.dalesandro.net/create-self-signed-smime-certificates/
That was the perfect guide and now I can do a self signed S/MIME cert on my Mail.app on macOS 10.14.3.
I have step by step follow the post above, and could not encrypt mail with smime.
Generate certificates successful but there is no lock display in the mail receiver.
Could you please describe the steps you've done?
Thanks so much @sm5050 !!
https://www.dalesandro.net/create-self-signed-smime-certificates/
That was the perfect guide and now I can do a self signed S/MIME cert on my Mail.app on macOS 10.14.3.
I’m not able to get Mail on macOS(10.14.4) or Mail on iOS(12.2) to cooperate with me.
I’ve create ca and test user(test@gmail.com for example), install test user’s p12 on my iphone, and Login test user on iOS Mail.
Turn on the settings for sign and encrypt in account/mail/advanced.
Finally, go to mail and send mail to my self. Nothing happend (no lock as describe in many other tutorials), login to webpage and the mail is plain.
If you want to create your own self-signed S/MIME certificate with OpenSSL, the process is simple:
First, create a CA (Certificate Authority) key and certificate.
Then generate a private key and CSR for your email.
Sign that CSR using your CA to get the S/MIME certificate.
Finally, export everything into a .p12 file so it can be installed in mail clients.
Just make sure to install both the CA certificate and the .p12 file, otherwise email apps may not trust it.
For more quick tech solutions and guides like this, you can also check out https://beanswers.com/
— it’s useful for beginners and enthusiasts alike.
Thanks so much @sm5050 !!
https://www.dalesandro.net/create-self-signed-smime-certificates/
That was the perfect guide and now I can do a self signed S/MIME cert on my Mail.app on macOS 10.14.3.