Amavis add-on?

Ed - are you saying that postfix (which is what I use) can
actually do this based on "content" - I know it
can do rewriting of headers, etc. based on some criteria,
but I didn't know it could check content - guess I'll have
to do some hunting 

Thanks.
 
 
>>> Ed <edeasent.net> 06/07/06 7:28 AM
>>> 
Hi,

This isn't really a function so much of Amavis/Maia but
rather the MTA 
that supports them.  What you're suggesting is very easily
done with say 
Postfix [ you need an MTA to support Amavis ] with aliases
or transport 
maps depending on your setup.

HTH
-- Ed

Danita Zanre wrote:
> We are replacing a Windows based anti- spam/anti- virus
solution with an Amavisd/Maia Mailguard combo for a
customer.  The one thing that the Windows product does that
I'd like to be able to duplicate down the road (I have a
few customers using this, and foresee that we will want to
find a way to do this), is cc/forward etc mail based on
subject line or contents.  For example, it's a law firm,
and they might need to cc all mail with "Danita"
in the subject line to a particular email account.  The
product we are replacing CAN do this, and I'm wondering if
there is an overlooked trick in Amavisd that might be able
to handle this, or even a third- party add- on.
>
> Thanks.
>
> Danita
>
>
>
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>   

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On Wed, 2006-06-07 at 08:29 -0600, Danita Zanre wrote:
> Ed - are you saying that postfix (which is what I use)
can actually do this based on "content" 

Postfix doesn't do it, but postfix can all something else
(like
procmail) to do it, so it should be possible to integrate it
into your
Maia/Postfix setup. I can't tell you exactly how because
I've not done
it myself, but I do know that Postfix can be configured to
call lots of
other things as mail goes through. Aside from calling
amavisd as all
Maia/Postfix  setups do, I've got it calling a greylisting
daemon, so
adding a call to procmail should be possible as well.

--Greg


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>Ed - are you saying that postfix (which is what I use)
can actually do this 
>based on "content" - I know it can do
rewriting of headers, etc. based on 
>some criteria, but I didn't know it could check content
- guess I'll have 
>to do some hunting 
>
>Thanks.
>
> >>> Ed <edeasent.net> 06/07/06
7:28 AM >>>
>Hi,
>
>This isn't really a function so much of Amavis/Maia but
rather the MTA
>that supports them.  What you're suggesting is very
easily done with say
>Postfix [ you need an MTA to support Amavis ] with
aliases or transport
>maps depending on your setup.
>
>HTH
>-- Ed

Postfix is not sophisticated in this area, but body_checks
work just like 
header_checks (and the other types listed here:
http://ww
w.postfix.org/header_checks.5.html

As long as the content you are looking for is limited to one
line, you may 
be able to use it. I think there are ways to check content
that spans more 
than one line, but whatever matches first triggers whatever
action you 
define. No ands, or ifs.

The postfix mailing list may be able to provide more details
about whether 
these are suitable mechanisms for your requirements (and if
they are, how to 
best configure them to do what you want). It should be
mentioned that simply 
enabling any of these types of checks slows down Postfix
processing (I have 
heard by about 40%) as each line in each message must be
compared to your 
regex expression. Also, run  'postconf -m' to determine if
pcre 
functionality is compiled into Postfix. If you have it, it
is faster than 
regex, so it is preferred.

Gary V

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Greg Woods wrote:
> On Wed, 2006-06-07 at 08:29 -0600, Danita Zanre wrote:
>   
>> Ed - are you saying that postfix (which is what I
use) can actually do this based on "content" 
>>     
>
> Postfix doesn't do it, but postfix can all something
else (like
> procmail) to do it, so it should be possible to
integrate it into your
> Maia/Postfix setup. I can't tell you exactly how
because I've not done
> it myself, but I do know that Postfix can be configured
to call lots of
> other things as mail goes through. Aside from calling
amavisd as all
> Maia/Postfix  setups do, I've got it calling a
greylisting daemon, so
> adding a call to procmail should be possible as well.
>
>   
There are too many questions.  How are you storing the
email?  Are 
virtual domains involved?  If virtual domains are involved,
forget using 
procmail.  If you are delivering to Maildir folders with
some form of 
virtual domains, you should be able to get maildrop to work
nicely [1].  
You'd have to create a maildroprc file that would look at
the subject 
line (or whatever else you want to filter).  Here's another
link [2] 
which may help.

I've been meaning to setup maildrop to automatically sort
my incoming 
mail so that mailing list messages would be delivered to the
appropriate 
folder rather than using filters in my mail client.  Just
haven't found 
the time yet.

[1]:  
http://gentoo-wiki.com
/HOWTO_Email_Virtual_Server_Maildrop_and_Spam_Assasin#Maildr
op_Setup
[2]:  
http://genco.gen.tc/postfix_virtual.php#maildropconf

Darrick

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DJH Solutions, LLC
http://www.djhsolutions.c
om

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