No!
Sorted - well done. 

Graham

- - - 

Graham Burt
Managing Director
smileitworks

2-4 Dubarry House, Hove Park Villas
Hove, East Sussex   BN3 6AE

07968 619369  -  01273 731110
www.smileitworks.com - ipod to be won!

On 21 Jan 2013, at 11:40, Derek Cross <[email protected]> wrote:

> I've deleted the login files. Are you still getting the warning message?
> (fingers crossed!)
> Derek
> 
> 
> 
> On 21 Jan 2013, at 10:51, Derek Cross <[email protected]> wrote:
> 
>> Hi Ben
>> Yes I understand, but I don't want to fiddle until I have some expert advice!
>> You'll understand that many people find this message off-putting when they 
>> receive this kind of mail message!
>> 
>> Cheers
>> Derek
>> 
>> 
>> On 21 Jan 2013, at 10:47, Ben Rubinstein <[email protected]> wrote:
>> 
>>> On 21/01/2013 09:51, Derek Cross wrote:
>>>> I understand this is to do with a keychain certificate issue and that I 
>>>> need
>>>> to delete the invalid certificate.
>>>> I admit I was fiddling with this utility a couple of months ago – about
>>>> another matter – and I presumably messed one up or something.
>>> 
>>> The message I get says that it's been flagged because the message includes 
>>> a digital signature, but the signature is invalid.
>>> 
>>> The signature is regarded as invalid, because it was issued by a 
>>> certificate authority that my system doesn't trust - ie it's not in my list 
>>> of trusted authorities.  The authority in question is, err, you.
>>> 
>>> In other words, you've got a self-signed certificate.  That isn't a problem 
>>> in itself, it's just not a useful thing to sign general emails with.  So 
>>> the problem isn't necessarily to be resolved in your Keychain - it may be 
>>> just finding the setting in Apple Mail that is currently set to sign 
>>> outgoing email with that certificate, and tell it not to.
>>> 
>>> ... but as I've never used Apple Mail, I've no idea where to do that, sorry!
>>> 
>>> Ben
>>> 
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>> 
> 
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