From: "Yang Xiao" <[EMAIL PROTECTED]>

> Hi all,
> I've been noticing it lately that almost 90% of emails come in through
> our secondary MX host are spams, I just want to know if there's an
> explanation for this, my guess is that the spammers spam the secondary
> MX host intentionally for some reason I can't understand, maybe hoping
> the secondary host will configured with less care?

Wow, it's been awhile since this floated through the list the last time.

The theory among the spammers is that the secondary and tertirary
MX machines are less well protected. "They're backups, afterall.
They're not used every day."

Most canny anti-spammers are aware of this and may actually have the
secondaries nailed down a little tighter than the primaries.

{^_-}

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