FAQ's 
Do you support DKIM?
Knowledge Base > FAQ's > Do you support DKIM?
By Jeroen van Meeuwen on September 16, 2017

Domain Keys Identified Mail (DKIM) is fully supported by Kolab Now, and all outbound email messages are signed.

This means that recipients can verify that the message was sent using Kolab Now infrastructure. There is no need for users to set anything up themselves.

Furthermore, inbound email messages are checked for valid DKIM signatures. To review the details of messages you receive, review the headers of the email message and search for a header called Authentication-Results:

Authentication-Results: ext-mx-in002.mykolab.com (amavisd-new);
        dkim=pass (4096-bit key) header.d=kolabsys.com
Received: from mx.kolabsys.com (unknown [10.5.4.1])
        by ext-mx-in002.mykolab.com (Postfix) with ESMTPS id 48C6A18A
        for <kanarip@kanarip.ch>; Tue, 12 Sep 2017 13:04:55 +0200 (CEST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kolabsys.com; h=
        content-transfer-encoding:content-type:content-type:mime-version
        :references:in-reply-to:precedence:x-mailer:message-id:subject
        :subject:reply-to:from:from:date:date:received:received
        :received; s=dkim20160901; t=1505214294; x=1505214316; bh=Jo2Bhb
        eUXTiguvaOlBDWUWRDrBpxgb9tvCLAKj70oG0=; b=14glffkQVFtdb9eXo7fUcT
        YozpiVl950TVc9VA+mhxUG/JqOnn7XS5VO4Ts70H7sHHOg+EH5KmneTLFSnnfZz/
        XBFr0x79SH9oi4BLUS6lvaTPeQ4KKa7sekiGSf64ri2l1W2xx8AgpcLaMNF7zKgm
        HI3GmX+6nABBypzZ9SkClljkbd09ChlVbvvI7D0IODRvXI+YtRgQX4Qpx9+NQG+s
        qHyZxUeeWsYVMfiKHp9fLnZIXfA1oFY/TLjPlLG5hQxeM+6z7xvuFu+HXcIXnklf
        hXRIVyKE6eOOK5iysbQoDvRgq44qU7AmnwcZ0RwB/o+CPliykbwy9UWC6z7cksds
        ulZJ25QZRyd1MQ/E4anZfEpgWZkms2TtwLBngDqD2f4FeeEH+a5tG3ZHR9rDRfgd
        v0zL/nhLwAL8Mo0FgmWb6dyRoCEpBi7Z2d/u0lzPMLzpDL3Rndk7cOJwzdzul+Zi
        FUqpckA2QSlEHQThIW9ONm+LipwYhygJhSOhbBhPOY4DvTDiEuQWV80YCfjZFgwz
        z1iH+EyLLy5vVIhvIbeibS1fjm4EDYmPNiWrj6gZUvrPjMZBECxDe0q1CEG91Z/+
        fVJGWQ9MDPeutecCuMO5Prn7hb5FKcBDJs1rdakVEmaWqzbMvkxrWHM2x8Z9kOwc
        Vi4uXRmjnv+6/A13ZZfcM=

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