Odd bounce message

[Rex Widerstrom]

Can anyone tell me what the following might mean in the header of a 
bounced message?:

554 - infinite loop in ruleset 3, rule 7  Sun Sol server - N-3.4 with 
ESMTP

I've seen a few bounced headers, but this one's new to me.

Thanks


Rex Widerstrom
Director, Polemic Political Consultants  http://polemic.net
List Manager 'Political Campaign Techniques' Mailing List
ICQ# 7177996