I'm setting up Zimbra OSE 7 and have a question in regards to some of the DKIMProxy concepts. For the record, I've followed this howto on setting it up. In that manual, submission port is 'used' for signing, so I wonder if I need to tell my Zimbra Desktop client users to configure their clients for sending out emails through port 587? If yes, how to do that, as I do not seem to see that option there?
On the other hand, what's happening with the emails sent through webmail Zimbra interface? Do they get signed too and do I have to change anything in order to send all outbound emails through port 587?
I do admit that my thoughts are misleading and that I do not get the concept right, but I'd appreciate any help on this one.
Thanks in advance!