Hi,

I have an S/MIME cert installed on my Macbook and I am using Mail.app with a Zoho account. When I send a signed email (signed on my Mail.app) the sig is invalid when it arrives at the far end. I am guessing that the Zoho servers are adding headers to the outbound email, making the sig invalid?

If this is the case, and I configure the S/MIME sig on my Zoho account (yes, I know I need a premium account etc) then I enable S/MIME on the control panel, this means S/MIME sigs are *always* on doesn't it? If I configure S/MIME on the Zoho control panel, how can I choose whether to sign or encrypt from my client end? I don't think I can?

I don't want it always on