Subj : New SMTPFILTER-SPFEVAL script.
To : All
From :
[email protected]
Date : Thu Jan 31 2019 07:12 pm
Date: Sat, 01 Dec 2012 11:42:17 -0400
From: "WINSERVER SUPPORT" <
[email protected]>
To: all
Subject: New SMTPFILTER-SPFEVAL script.
Newsgroups: win.server.program
Message-ID: <
[email protected]>
X-Mailer: Wildcat! Interactive Net Server v7.0.454.5
Lines: 126
The attached script is designed to pass SPF whitelisted domains with
Received-SPF: PASS results. The comments in the script should
explain how to use it and how it
works.
Let me know if you plan to use this.
--
Hector, Engineering & Technical Support
Santronics Software, Inc.
http://www.santronics.com (sales)
http://www.winserver.com (support)
http://www.winserver.com/AupInfo (Online AUP Help)
Office: 305-248-3204
////////////////////////////////////////////////////////////////////
// file : smtpfilter-spfeval.wcc
// date : 11/29/2012 12:25 pm
// about : check/accept whitelisted SPF domains with PASS results.
// author : HLS/SSI
// usage :
//
// Add script name, smtpfilter-spfeval, to the [hooks] section in
// order you wish, how, the intent of this script it to short-circuit
// or pre-empt the need to run the more "expensive" smtpfilter-checkwords
// script. So this spfeval script should run before checkwords is run.
//
// Add domains you trust in the file data\SpfEval-Sender-whitelist.txt.
// Create the file if missing. These are sender domains (SMTP MAIL FROM:
// command sender return address).
////////////////////////////////////////////////////////////////////
const FILTER_VERSION = "1.0"
#include <smtpfilterhlp.wch>
const SpfEvalSenderWhiteList = "wc:\data\SpfEval-Sender-whitelist.txt"
const SPFHDR = "Received-SPF:"
//----------------------------------------------------------
// AddressFound() is a common function found in many
// smtpfilter apps for checking an email address in a
// flat text listing file (fn).
// Return TRUE if match found
//----------------------------------------------------------
Function AddressFound(byval email as string, \
byval fn as string) as boolean
AddressFound = FALSE
dim fv as integer = open fn for input
if fv > 0 then
email = sfStripBrackets(email)
do while not eof(fv)
dim spec as string
input #fv, spec
spec = lcase(trim(spec))
if (spec <> "") and spec(1) <> ";" then
if WildcardMatch(email,spec) then
AddressFound = TRUE
exit do
end if
end if
loop
close #fv
end if
end Function
//----------------------------------------------------------
// MAIN PROGRAM
//----------------------------------------------------------
sfInitializeHook(paramstr(1))
dim args as string = lcase(paramstr(1))
dim fname as string = GetParamStr(args,"psf") // prespool file
dim helo as string = GetParamStr(args,"cdn") // EHLO/HELO
dim from as string = GetParamStr(args,"from") // MAIL FROM
dim rcpt as string = GetParamStr(args,"rcpt") // RCPT TO
if (args = "") then
print "Program: "; Paramstr(0)
print "Version: "; FILTER_VERSION
end
end if
//
// Check the data\spfeval-Sender-whitelist.txt file for the sender
// addresses we are checking for Received-SPF: PASS results.
//
// Only do this for the domains that you know for sure have
// a -ALL policy thus assuring a trusted 100% FAIL or PASS test.
// WCSAP will reject the -ALL policy FAILs and the current
// message will never reached SMTPFITLER scripts. However,
// for a PASS, it should be sysop-controlled who will be passed.
//
if not AddressFound(from, SpfEvalSenderWhiteList) then
END
end if
//
// Whitelisted address found, get the Received-SPF
// header, if any, and look for PASS results.
//
dim spf as string = ""
sfGetHeaderLine(fname,SPFHDR,spf)
if lcase(left(spf,4)) = "pass" then
sflog(lchInfo,"Accepting SPF Pass Message: "+from)
sfSetGlobalResult(SF_ACCEPT,SF_ENDRULES)
END
end if
// This is interesting. If we had whitelisted the domain
// in spfeval-whitelist.txt then we expected a Receiver-SPF
// perhaps. If the above check did not yield a PASS, then
// what do we do here?
// Ending with no GlobalResult, continues with next
// SMTPFILTER script, if any.
END
//
--- Platinum Xpress/Win/WINServer v3.1
* Origin: Prison Board BBS Mesquite Tx //telnet.RDFIG.NET www. (1:124/5013)
