>I had a mailing go out a little while ago that failed the spamheaders test
>too. Here is the log for it:
>
>SPAMHEADERS (bad headers [,C0400202]),
>
>I'd be very interested to know what this means and if I can do something to
>fix it.
That one appears to have a couple problems.
First, it may have failed the BADHEADERS test because of a problem with the
"Date: " header that violates the RFCs. Spammers often guess what it
should look like, and guess wrong. The RFCs require a time zone, which has
to be in a certain format. If it is missing, or not correct, that would
trigger the BADHEADERS test.
Second, it wasn't sent with a Message-ID: header (although IMail would have
added one after it was received). Virtually all legitimate E-mail clients
add a Message-ID: header. They aren't required (which is why it's part of
the SPAMHEADERS test, not the BADHEADERS test), but a good sign of spam.
-Scott
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