On Thu, Jul 10, 2008, GVG GVG wrote:

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> -rw-r--r--  1 root  wheel  1679 Jun 23 17:04 key.pem
      ^  ^

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> and in the mail_log there is nothing recorded! No errors or warnings!

1. man starttls (and see the referenced website).
2. increase the LogLevel (even though those errors should be logged
at the default level.)