[Mimedefang] (was Re: Blocking Dictionary Attacks)

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--- On Tue, 6/9/09, Matt Garretson <mattg at assembly.state.ny.us> wrote:
> Les Mikesell wrote:
> > a large number of invalid recipients that makes it obvious spam but it 
> > will still be accepted for a small number of valid addresses.  You might 
> > be able to figure that out with some work in filter_recipient - or just 
>  
> BTW, this reminds me, is MIMEdefang yet able to access sendmail
> macros defined after the MAIL FROM stage?  I've tried to access 
> $SendmailMacros{'nbadrcpts'} in every filter function, but it 
> never has a value.

Did you tell Sendmail to provide the value?  The default setting is:

O Milter.macros.envrcpt={rcpt_mailer}, {rcpt_host}, {rcpt_addr}

"nbadrcpts" isn't among the values passed by default.  You must add it if you want to use it.

> I recall from a couple of years ago that this was a known MD 
> limitation, but was wondering if it had been overcome since then.

Not with Sendmail 8.14.3 (the current version).