[Dovecot] what best for anti-spam filter?

[Steve]

-------- Original-Nachricht --------
> Datum: Tue, 24 Jul 2012 10:49:48 +0200
> Von: Morten Stevens <mstevens at imt-systems.com>
> An: Dovecot Mailing List <dovecot at dovecot.org>
> Betreff: Re: [Dovecot] what best for anti-spam filter?

> On 24.07.2012 09:16, Arnaud Abélard wrote:
> 
> > And first of all, even if this is not dovecot related, use a
> > greylisting solution.
> 
> No, greylisting is really a bad solution. It is not RFC compliant and 
> delays the mail traffic.
> 
In what sense is greylisting not RFC compliant?


> I would prefer a pre-queue content-filtering solution like MIMEDefang 
> or amavisd-new.
> 
> Best regards,
> 
> Morten