[Mimedefang] Milter (mimedefang): to error state

[Breena Kermott]

I run Mimedefang 2.28 on my RH8 mail server, and every few days it dies 
with this error:

Feb 27 07:19:58 yohimbe sendmail[14686]: h1RFJwpH014686: Milter 
(mimedefang): to error state
Feb 27 07:19:58 yohimbe sendmail[14686]: h1RFJwpH014686: Milter: 
initialization failed, temp failing commands
Feb 27 07:23:15 yohimbe sendmail[14692]: h1RFNFpH014692: Milter 
(mimedefang): local socket name /var/spool/MIMEDefang/mimedefang.sock unsafe

Is this a version bug?  Or a configuration problem?
Thanks!
Breena