A copy of this message was sent to <number> recipient(s), but the Internet format of this message was not sent to the following <number> recipient(s): <address>

What happened

You sent a message to one or more Notes® mail addresses as well as one or more Internet mail addresses. Some of the Notes recipients may also have MIME specified as their message storage preference in Person documents in the Domino® Directory. Notes successfully sent the message to the recipients whose preference is Notes Rich Text, but a problem occurred while sending the message to recipients whose preference is Prefers MIME.

What you can do

To send the message to all recipients, remove rich-text elements (such as hotspots, file attachments, horizontal lines, or pictures) from the message and resend it.