On 04/06/2015 01:23 PM, Martijn Brinkers wrote: > On 04/06/2015 11:34 AM, Arie Koppelaar wrote: >> Thanks for your quick reply. I was not sure about the configuration >> possibilities of CipherMail, but Martijn made an important point as >> well. Why not always encrypt if its possible? I recon it's also a >> mindset, and the knowledge that receivers do not use such a great >> solution where mail is decrypted automatically, without any user >> intervention. > > The good thing of always encrypting is that you cannot forget to > encrypt. Another reason to always encrypt is that if you only encrypt > certain sensitive email, any outside attacker knows which mails to > target since if the email is encrypted, it means that the email is > sensitive. By encrypting all email, you are no longer leaking this > information. > > Then again, like you said, not all recipients might like to receive > every email encrypted if they do not use some kind of automated process. > >> Sebastian, thanks for your suggestions, they could work very well, but >> would be a little too complicated for our support group. > > Another option would be to use your existing email filter/server to add > a header when a rule matches and then force encryption if this header is > found. Whether or not this works depends on whether you are using a mail > server or mail filter with such capabilities. I think Exchange 2013 for > example supports transports rules which allow you to add headers when > some condition matches > (https://technet.microsoft.com/en-us/library/dd638183%28v=exchg.150%29.aspx). > Ironport probably also allows you to add headers when some condition
It seems that Exchange 2007 also allows you to add a transport rule which can add a header when the email is sent by a specific sender and the recipient is a specific recipient (or member of a recipient list). Kind regards, Martijn Brinkers -- CipherMail email encryption Open source email encryption gateway with support for S/MIME, OpenPGP and PDF messaging. http://www.ciphermail.com Twitter: http://twitter.com/CipherMail _______________________________________________ Users mailing list [email protected] https://lists.djigzo.com/lists/listinfo/users
