Hi list.
Since i upgraded from 1.98(13056) to 1.99(13107) and even latest version 
(13129), i have noticed that most of spam messages received are detected as 
bounce and to discarded folder. Only few spam messages are going is spam folder 
(those not detected as bounce).

We are using assp with the following workflow : 
Outbound : outlook->msechange(mapi)-->assp relayport + postfix (on the same 
host) --> Internet. For sending mail to Assp Email Interface i have filled the 
name of an unexistant_domain ASSP Relaying/Local Domains. It works fine. ASSP 
can easily catch everything send to Email Interface Addresses 
(whitelist@unexistant_domain, assp-help@unexistant_domain.....and so on).
Inboud : Internet-->ASSP + postfix (on the same host) --> Microsoft Exchange 
(mapi) --> Outlook.

Here is an example of assp logfile showing how most of spam are detected : 

May-12-13 01:32:22 m-36831-04867 [isbounce] 109.239.222.145 
internaluser[@]internaldomain validated by ldap-cache;
May-12-13 01:32:25 m-36831-04867 109.239.222.145 FROM:<t.czarnet...@tellur.ru> 
to: internaluser[@]internaldomain Message-Score: added 25 for Blocked Country 
RU, total score for this message is now 25;
May-12-13 01:32:25 m-36831-04867 109.239.222.145 FROM:<t.czarnet...@tellur.ru> 
to: internaluser[@]internaldomain 
[scoring:25] -- Blocked Country RU -- [New Pick After Closing Bell];
May-12-13 01:32:25 m-36831-04867 109.239.222.145 FROM:<t.czarnet...@tellur.ru> 
to: internaluser[@]internaldomain
Message-Score: added 10 for Suspicious H
ELO: '109.239.222.145', total score for this message is now 35;
May-12-13 01:32:25 m-36831-04867 [SuspiciousHelo] 109.239.222.145 
FROM:<t.czarnet...@tellur.ru> to: internaluser[@]internaldomain
[scoring:10] -- Suspicious HELO: '109.239.222.145' -- [New Pick After Closing 
Bell];
May-12-13 01:32:25 m-36831-04867 109.239.222.145 FROM:<t.czarnet...@tellur.ru> 
to: internaluser[@]internaldomain info: skip SPF check - domain 109.239.222.145 
is not a FQDN;
May-12-13 01:32:25 m-36831-04867 109.239.222.145 FROM:<t.czarnet...@tellur.ru> 
to: internaluser[@]internaldomain
Message-Score: added 11 for Low Reputation for 109.239.222.145, total score for 
this message is now 46;
May-12-13 01:32:25 m-36831-04867 109.239.222.145 FROM:<t.czarnet...@tellur.ru> 
to: internaluser[@]internaldomain
Message-Score: added 150 for DNSBL: failed, 109.239.222.145 listed in 
bl.spamcop.net db.wpbl.info, total score for this message is now 196;
May-12-13 01:32:25 m-36831-04867 [DNSBL][isbounce] 109.239.222.145 
FROM:<t.czarnet...@tellur.ru> to: georges internaluser[@]internaldomain [spam 
found][blocked]
-- DNSBL, 109.239.222.145 listed in bl.spamcop.net db.wpbl.info -- [New Pick 
After Closing Bell] -> 
/var/db/assp/discarded/New_Pick_After_Closing_Bell__2149.e
ml;


How is it possible to that we cannot see the originating "mail from" in the 
first line of that messages detected as bounce?

May-12-13 01:32:22 m-36831-04867 [isbounce] 109.239.222.145 
internaluser[@]internaldomain validated by ldap-cache;

The problem with those messages detected as bounce is that spam messages don't 
feed anymore spamdb because they are stored in discarded directory.......

Any idea would be really appreciable....

A second issue we have is that if "do Message-ID Signing" '(backscatter 
detection) Delivery Status Notification (DSN) messages are blocked by ASSP 
(discarded). So we have disabled this feature.

(Sorry Fritz, MDN messages are OK now but DSN are blocked)
X-Assp-Score: 50 (MSGID-sig check failed <>), maybe this is due to 
misconfigured partners smtp server......?....

Thanks again for any advices or explanation about most spam detected as 
bounce....

Regards



MAIRIE DE SALLANCHES
Direction des Systèmes d'Information
Alexandre RAYNAUD


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