[Mimedefang] Question about filtering relays and recipients

[Dirk the Daring]

   I've been reading more in the mimedefang-filter man page, and I'm
unclear regarding some aspects of the section titled RBL LOOKUP
FUNCTIONS. I'm just not very good at Perl, I'm afraid - I'm an old C
hack, so program flow is not an issue, but the syntactical differences
keep tripping me up.

   Anyway, the man page is unclear on WHERE (in mimedefang-filter) the
relay_is_blacklisted_* functions should be placed. I would think that
filter_relay would be the place, but I'm not sure. Could someone clarify
that?

   I'm also looking for some example code using
relay_is_blacklisted_multi_count, including how to construct the array
of RBLs to pass to that function and how to properly evaluate the return
value (for example, to REJECT with X or more "hits" but not trip over
SERVFAIL or NXDOMAIN).

   Additionally, I'd love to use the md_check_against_smtp_server
function, but I'm not sure I can. In my environment, where I host a
number of Domains, the MIMEDefang server could relay to any one of 4
other servers. That is, "bob at domain1.tld" might have his mailbox of
"server1.domain1.tld" while "jane at domain1.tld" has her mailbox of
"server2.domain1.tld" and "john at domain2.tld" has a mailbox on
"server1.domain1.tld". Sendmail deals with this thru the use of
mailertable and virtusertable.

   Do I need to employ stream_by_recipient ? Or should I use the
SOCKETMAP functionality (I do have sendmail v8.13.4) to have MIMEDefang
query virtusertable and mailertable? For that matter, as MIMEDefang
looks at these E-Mail addresses, is it seeing them *before* or *after*
sendmail has run thru aliases, virtusertable, and mailertable? Does
anyone ever have an environment where they host multiple Domains
across multiple interior servers?

   Also, does the SMTP server against which the "check" will be done
need to support VRFY? If not, are there any of the usual anti-SPAM
settings in sendmail (e.g. needhelo) that should be avoided so that
MIMEDefang can place its query?

   Thanks again to the MD community for the assistance.

Dirk


------------------------------

Message: 8
Date: Thu, 16 Jun 2005 17:49:10 -0400 (EDT)
From: Dirk the Daring <dirk at psicorps.org>
Subject: [Mimedefang] MaxMIMEParts and MIME::Tools
To: mimedefang at lists.roaringpenguin.com
Message-ID: <Pine.GSO.4.58.0506161745200.24847 at luna.psicorps.org>
Content-Type: TEXT/PLAIN; charset=US-ASCII

  The man page states that I must have the Roaring
Penguin-patch version of MIME::Tools v5.411a-RP-Patched02 or newer in
order for MaxMIMEParts to be effective.

  The command:

	perl -MMIME::Tools -e'print "$MIME::Tools::VERSION\n";'

  gives me:

	5.417

  I'm unclear on if I have a "good" version. Is MIME:Tools v5.412 and up
OK, or do I still need the "RP" version?

Dirk


------------------------------

Message: 9
Date: Fri, 17 Jun 2005 00:03:09 +0200
From: Jan Pieter Cornet <johnpc at xs4all.nl>
Subject: Re: [Mimedefang] Out of memory on FreeBsd 5.4
To: mimedefang at lists.roaringpenguin.com
Message-ID: <20050616220309.GA41881 at xs4all.nl>
Content-Type: text/plain; charset=us-ascii

On Thu, Jun 16, 2005 at 04:13:33PM -0500, Jim McCullars wrote:
> > Jun 16 16:18:19 host1 mimedefang-multiplexor[7689]: Slave 1 stderr: Failed
> > to compile URI SpamAssassin tests, skipping:  (Out of memory during
>
>    In your MIMEDefang startup script, do you have values defined for
> MX_MAX_RSS or MX_MAX_AS?  That could be the culprit.

Also, BigEvil is really deprecated, and eats gobs of memory. I suggest
you use surbl.org instead. It can be enabled by default with SA 3.x,
and is available via a plugin for SA 2.6x. That will require network
lookups, though, so you might consider mirroring the zones locally if
you have a large volume mail server.

-- 
#!perl -wpl # mmfppfmpmmpp mmpffm <pmmppfmfpppppfmmmf at fpffmm4mmmpmfpmf.ppppmf>
$p=3-2*/[^\W\dmpf_]/i;s.[a-z]{$p}.vec($f=join('',$p-1?chr(sub{$_[0]*9+$_[1]*3+
$_[2]}->(map{/p|f/i+/f/i}split//,$&)+97):qw(m p f)[map{((ord$&)%32-1)/$_%3}(9,
3,1)]),5,1)='`'lt$&;$f.eig;                                # Jan-Pieter Cornet


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