Microsoft KB Archive/254594

= OL2000: (CW) Can't Send Digitally Signed or Encrypted Mail in Outlook =

Article ID: 254594

Article Last Modified on 9/29/2003

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APPLIES TO


 * Microsoft Outlook 2000 Standard Edition

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This article was previously published under Q254594



NOTE: The procedures in this article only apply if you have installed Outlook with the Corporate or Workgroup option. With this option, you can use Messaging Application Programming Interface (MAPI) services. To determine your installation type, click About Microsoft Outlook on the Help menu. If you have the Corporate or Workgroup installation, you see "Corporate or Workgroup".



SYMPTOMS
When you digitally sign an outgoing e-mail message with a digital ID, you may receive the following error message:

The message cannot be secured using the selected Security Setting. Your e-mail address may not match the e-mail address on the certificate, or some other problem exists with the certificate.



CAUSE
This behavior can occur when you have Outlook configured to use two or more Internet e-mail accounts.



RESOLUTION
You must send the message using the e-mail address associated with the security certificate. To change the sending e-mail address, follow these steps:
 * 1) Open the message you are trying to send.
 * 2) On the View menu, click From Field.
 * 3) Type the e-mail address used to obtain the security certificate on the From line.



MORE INFORMATION
Outlook (CW) does not use the Send Message Using command available in both Outlook Internet Mail Only (IMO) and Microsoft Outlook Express. You must type the e-mail address that is used by the digital ID in the From field.

If your e-mail address automatically resolves to a friendly name, and you still receive the ealier error message, perform the following steps prior to typing your e-mail address:
 * 1) On the Tools menu, click Options.
 * 2) On the Preferences tab, click E-mail Options.
 * 3) Click Advanced E-mail Options, and clear Automatic name checking.
 * 4) Click OK three times to exit all dialog boxes.

