Re: [courier-users] Encrypted IMAP Storage

Mark Constable wrote:
> On Wednesday 09 January 2008 19:58:44 Alessandro Vesely wrote:
>>> If the MTA's local delivery agent handled the encryption,
>>> using a public key supplied by and from the users homedir,
>>> it would eliminate any other user on the system from
>>> interferring with the messages. Sure, Google Mail engineers
>>> and hacked LDA's could intercept messages on contrived
>>> systems but, in general, once messages were encrypted
>>> then they would be safe from further prying.
>> Of course you can do that using maildrop/openssl, e.g.
>>
>> if (/^X-Encryption-Required: Yes/)
>> xfilter "openssl smime -encrypt certificate.pem"
>
> This is pretty close but encrypts the complete message
> whereas I only want to encrypt the content body.
>
>> Where certificate.pem is readable by the server and has
>> also been imported in the client. Well, "openssl smime"
>> leaves something to be desired, as it eliminates all
>> existing headers. In any case, the headers won't be
>> encrypted, therefore the privacy that the client may
>> enjoy is slightly below secure pop3: an intruder on the
>> server will still be able to enumerate all received
>> messages.
>
> Thanks for your suggestion and I can now see that using
> maildrop to handle this is the way to go and I've done
> quite a bit of reading (never used PGP/smime before) but
> I can't get a grip on an easy/efficient way to get at
> just the body of a message at the point of local delivery
> through maildrop.
>
> Would anyone have an idea how I can get at the body of a
> message using maildrop or would I have to shell out to an
> external script/program ?
>

openssl is already an external command, so using a wrapper script is the
way to go (if this is your road ;-p)


I would be interested to hear about this if it works for users. Thanks
in advance.





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