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From "Uwe Kiewel" ...@kiewel-online.de>
Subject Re: Multidomain Mailhosting on one physical host
Date Fri, 03 Mar 2006 17:56:19 GMT
""Daryl C. W. O'Shea"" <spamassassin@dostech.ca> schrieb im Newsbeitrag
news:<44073C7A.1060904@dostech.ca>...
> Kelson wrote:
> > sa@kiewel-online.de wrote:
> >> User Sam and Joe has internet access via DSL with a dynamic ip 
> >> address. The mail going from sam@dom1.org to joe@dom1.org is 
> >> identified as SPAM because the sending ip address is the dynamic 
> >> dial up address.
> 
> > The best solution would be to make your users send with SMTP-AUTH, 
> > and
> > then tell whatever calls SpamAssassin to skip SA if it finds valid 
> > SMTP-AUTH info.
> > 
> > I'd guess from your description, however, that you're running
> > SpamAssassin on delivery and not on receipt, which will probably
make 
> > this a bit more challenging.  Though if you can check after the fact
for 
> > valid SMTP-AUTH info, you can probably still make it work.
> 
> If you can get Postfix to insert RFC 3848 style "with ESMTPA" tokens 
> or
> Sendmail style "authenticated user" lines in the headers, SpamAssassin

> will automatically recognize that the user is authenticated (if they 
> authenticate) and not do the dynablock checks.  If anyone knows how to

> do this (I've never used Postfix), I'd like to document it on the
wiki.
 
I think, this is the best way to solve my problem. At first I'll try to
use Nigels solution, to set whitelist-from in SA's local.cf

I hope to find these informations to implement it as soon as posible.

> If you use POP-before-SMTP, there's also the POPAuth plugin available 
> on
> the wiki at: http://wiki.apache.org/spamassassin/POPAuthPlugin
> 
> Also (like Kelson said), if you don't want to scan local-domain mail 
> at
> all (NOT something I prefer myself), you can probably configure 
> amavisd-new or Postfix to skip mail from these users.

POPAuth is not prefered, because a lot of clients use IMAP.

 Regards,
	Uwe

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