Dmitri Snytkine a écrit :
> Hello!
> 
> I am just wondering what are the advantages of using Amavisd over just using
> Spamassassin in daemon mode (spamd)
> I mean spamd has support for dcc, razor, pyzor, dnsrbl, SPF, DKIM
> You can also configure your own regex rules to check headers
> 
> What does the Amavisd add that Spamassassin does not already have? I am only
> interested in spam prevention, not a virus scanning.
> 
> Thank you for a reply. Just want to know why should I use Amavis. By the way
> I already installed and and using it, but then I realized
> than what Amavisd does I could have done with Spamassassin.

The first question is how would you make your MTA (postfix or other)
talk to spamd.

there are a couple of ways:
- call spamc at delivery time. This doesn't work for relay gateways,
where no delivery is performed.

- exec a script that calls spamc. This is not robust, has a few problems
(resubmitting mail must be done in a way to avoid loops, ... etc) and is
not efficient (fork/exec...)

- use a proxy. This proxy can either integrate spamassassin via library
calls, which is what amavisd-new does. or it could implement spamc
functionality to talk to spamd.


amavisd-new can also take decisions: block, quarantine, redirect, ...
(spamassassin doesn't care about delivery: it is here to classify the
message).


See
        http://www.ijs.si/software/amavisd/#features
for more infos.


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