encryption of emails
has, or does anybody know, an email-gateway, that encrypts emails
for example the whole mailexchange between several branches of a
company? maybe a kind of "black-/whitelist" - all mails to
users/domains on a list will be encrypted - the rest will be sent
it is important, that this works automated, serversided and no user
has to do (forget ;) something!
and: is it possible to store incoming emails encrypted (postfix -
Maildir), that f.e. no user with local access can read mails of another
user on the server? when polling this encrypted emails, they should
be decrypted automatically!
thx for any ideas & tips!