My question would then be why isn’t the AV interfering with the message if it’s encrypted or when it is signed AND encrypted. Why is it only the “signed only” messages that are getting messed with?
I can start from scratch and work through the mail path to see what I can find…
i am now getting this as well, except that i randomely get the signature invalid message, sometimes i send emails and sign them and they are ok but other times, i check my sent folder and it says signature invalid … i am using internet explorer 7 and windows live desktop on windows xp…
Hi,
The only thing I can think of is that a signed, but not encrypted message is being modified somehow, either at the user or server level by some AV software. Usually by adding a tagline, “This message was scanned by {AV Program X}…” I think it likely that an AV program doesn’t interfere that way with an encrypted message because it can’t due to the encryption.
That latter bit is pure conjecture on my part, but seems logical because the reason for encrypting messages is to prevent them being scanned or modified by 3rd parties.
