A problem I used to have with using Macjordomo was with people sending subscription emails that were either in HTML format or had misspelt or missing subscription commands. Whenever I would receive such email, it would generate an error in Macjordomo.
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We believe in the long term value of Apple hardware. You should be able to use your Apple gear as long as it helps you remain productive and meets your needs, upgrading only as necessary. We want to help maximize the life of your Apple gear.