How to configure SMIME on Zimbra: Difference between revisions
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S/MIME is an acronym for Secure/Multipurpose Internet Mail Extensions. It references a type of public encryption and signing of MIME data (email messages) to verify a sender’s identity. | S/MIME is an acronym for Secure/Multipurpose Internet Mail Extensions. It references a type of public encryption and signing of MIME data (email messages) to verify a sender’s identity. | ||
==What it allows you to do is two things:== | =====What it allows you to do is two things:===== | ||
Ensure to your email recipients that YOU actually sent the email. | Ensure to your email recipients that YOU actually sent the email. | ||
Allows the possibility of sending and/or receiving email encrypted. | Allows the possibility of sending and/or receiving email encrypted. | ||
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As mentioned above, S/MIME is a type of “end-to-end” encryption solution used for email messages. To be more specific, it uses asymmetric cryptography to protect emails from being read by a third party. | As mentioned above, S/MIME is a type of “end-to-end” encryption solution used for email messages. To be more specific, it uses asymmetric cryptography to protect emails from being read by a third party. | ||
'''Sign:''' Digitally validate that you are the sender of a message. When signing, you use your private key to write message's signature, and they use your public key to check if it's really yours. | |||
'''Encrypt:''' encrypt the composed message for one or more recipients. When encrypting, you use their public key to write a message and they use their private key to read it. | |||
In order to encrypt, you must have previously received a signed message from that user, such that Zimbra has stored the public S/MIME certificate for that other user. A digital id or digital certificate consists of a public and private key. Your public key is shared with everyone. Your private key is kept private. | In order to encrypt, you must have previously received a signed message from that user, such that Zimbra has stored the public S/MIME certificate for that other user. A digital id or digital certificate consists of a public and private key. Your public key is shared with everyone. Your private key is kept private. | ||
Revision as of 06:35, 2 June 2021
How to configure S/MIME(Webmail, ZCO,IMAP,POP and Thunderbird)?
What is S/MIME?
S/MIME is an acronym for Secure/Multipurpose Internet Mail Extensions. It references a type of public encryption and signing of MIME data (email messages) to verify a sender’s identity.
What it allows you to do is two things:
Ensure to your email recipients that YOU actually sent the email.
Allows the possibility of sending and/or receiving email encrypted.
How Does S/MIME Work?
As mentioned above, S/MIME is a type of “end-to-end” encryption solution used for email messages. To be more specific, it uses asymmetric cryptography to protect emails from being read by a third party.
Sign: Digitally validate that you are the sender of a message. When signing, you use your private key to write message's signature, and they use your public key to check if it's really yours.
Encrypt: encrypt the composed message for one or more recipients. When encrypting, you use their public key to write a message and they use their private key to read it.
In order to encrypt, you must have previously received a signed message from that user, such that Zimbra has stored the public S/MIME certificate for that other user. A digital id or digital certificate consists of a public and private key. Your public key is shared with everyone. Your private key is kept private.
