Zitat von john <j...@klam.ca>:
We need to ensure that emails sent by some of our users are encrypted (medical records, reports, etc) before they are sent.We only accept out going mail from our local users by submission (port 587).I realize that this is really the job of the MUA, but I would like to check that emails are in fact encrypted before being sent. If an unencrypted email is encountered transmission would be denied with a suitable message/code. One other thing that we might also need to do is to move the supplied subject into the body of the message and substitute a generic heading, this to prevent the patient name showing up in plain text.I originally thought that the basic checking might be possible using header and/or body checks, but I am not sure if this will be reliable enough.Is any of this possible, if so suggestions as to where to look or solutions.
HelloAs others said this is not the job of a MTA. You might have a look at Djigzo (http://www.djigzo.com/gateway.html). It also includes a DLP (Data-Leak-Prevention) in recent releases and should be able to do the trick.
Regards Andreas
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