I have Win 8 and Outlook 2013 installed and have accounts set up for multiple email accounts.
I downloaded and installed a Comodo email certificate for one of the accounts (acct1@mysite.com).
I then sent a signed email to one of my other email addresses (acct2@mysite.com).
I received the email in acct2 with the expected public key indicator and updated the sender (acct1) in my contact list with the public key. When I edit the contact(acct1) it shows that the contact is linked to the certificate from acct1 and says that the certificate will be used when sending an email to acct1.
As best as I can tell, Outlook only allows a single global configuration for encryption versus a separate setting for each email account. Those settings (File/Options/TrustCenter/EmailSecurity) specify to encrypt outbound emails (no digital sig) and it shows the default setting of My S/MIME Settings with the acct1 email address.
It was my understanding that when I sent an email from acct2 to the acct1 sender, that the email contents would be encrypted with the public key.
When I try to send an email from acct2, using the saved Contact in the 'To' address, I get an error message that says "Microsoft Outlook cannot sign or encrypt this message because there are no certificates which can be used to send from email address acct2...".
Any suggestions on how to make this work?
Thanks,
Rick
Rick