The subject above is an error I found in my maillogs (/var/log/maillog) when trying to figure out why periodic emails from a server had stopped. I was running the default sendmail on FreeBSD 7.2, though what I've found should be broadly applicable to many versions of sendmail on many OSes.Let there be no doubt, I'm not a mail expert. I nearly cried this weekend when I discovered I'd be
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