Hi Skillari,
have a look on this site:
"You receive an "Microsoft Outlook could not sign or encrypt this message
because your certificate is not valid" error message when you send a signed
e-mail message in Offline mode in Office 2003"
http://support.microsoft.com/kb/823926/en-us
Maybe it helps.
--
Oliver Vukovics
Share your Outlook PST files without Exchange: Public ShareFolder
Synchronisation for Outlook and Exchange: Public SyncTool
http://www.publicshareware.com
"Skillari" <(E-Mail Removed)> schrieb im Newsbeitrag
news:(E-Mail Removed)...
> Our company currently has godaddy.com hosting our email. I have one
> of my users setup to download his messages off godaddy's servers in to
> Outlook2002 who is having a problem when receiving emails from
> usmc.mil domain. He is the only person I know of that is having this
> issue. When he tries to open the email he gets the following pop up
> message:
>
> Invalid Certificate:
> Microsoft Outlook could not encrypt this message because you have no
> certificates which can be used to send from the e-mail address
> '(E-Mail Removed)'
>
> OK and Help are the only options.
>
> Unfortunately this user is in another state and this is on his
> personal machine. If he has the same people email his hotmail account
> he has no problems so I assume it is just a setting in Outlook that
> needs to be corrected. Any help is appreciated.
>