HTML e-mails to this list are silently dropped?

list Martin Blomdahl
Mon, 11 Oct 2010 08:37:35 +0200
Message-Id: <user-6b9ad5fabcef@xymon.invalid>

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                                                                              Your       [xymon] HTML e-mails to this list are silently dropped?         document:                                                                                                                                             was        user-36189077a4c8@xymon.invalid                              received                                                                   by:                                                                                                                                                   at:        2010-10-11 08:37:37