[exim] Little Problem with Exim and incorrect Addresses

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Autor: Luca Bertoncello
Data:  
Para: Exim-Users ML
Assunto: [exim] Little Problem with Exim and incorrect Addresses
Hi, all!

I'm new in this list... First of all, greetings @all!

Then, the problem...
My firm uses Exim as MTA, and we have a little problem. I can see, with exim
-bpr many E-Mails in the queue. For example, I can see:

36h   933 1Dk5R5-0002iQ-PT <nofrom@email>
          kontakt@$$$$$$$$$$.de


If I grep on /var/log/exim_mainlog, I see, for this E-Mail:

2005-06-21 00:50:26 1Dk5R5-0002iQ-PT == >" " <> <kontakt@$$$$$$$$$$.de> R=virtual_forward T=autoresponder defer (-52): Retry time not yet reached
2005-06-21 02:50:26 1DkWyA-0006ps-Ei Error while reading message with no usable sender address (R=1Dk5R5-0002iQ-PT): at least one malformed recipient address: " " <> - missing or malformed local part
2005-06-21 02:50:26 1Dk5R5-0002iQ-PT == >" " <> <kontakt@$$$$$$$$$$.de> R=virtual_forward T=autoresponder defer (0): Failed to send message from autoresponder transport (1)
2005-06-21 02:50:27 1Dk5R5-0002iQ-PT == >" " <> <kontakt@$$$$$$$$$$.de> R=virtual_forward T=autoresponder defer (-52): Retry time not yet reached
2005-06-21 04:50:26 1Dk5R5-0002iQ-PT == >" " <> <kontakt@$$$$$$$$$$.de> R=virtual_forward T=autoresponder defer (-52): Retry time not yet reached
2005-06-21 06:50:25 1Dk5R5-0002iQ-PT == >" " <> <kontakt@$$$$$$$$$$.de> R=virtual_forward T=autoresponder defer (-52): Retry time not yet reached
2005-06-21 08:50:26 1DkcaY-00045w-0Z Error while reading message with no usable sender address (R=1Dk5R5-0002iQ-PT): at least one malformed recipient address: " " <> - missing or malformed local part
2005-06-21 08:50:26 1Dk5R5-0002iQ-PT == >" " <> <kontakt@$$$$$$$$$$.de> R=virtual_forward T=autoresponder defer (0): Failed to send message from autoresponder transport (1)
2005-06-21 09:35:25 1DkdI5-000132-5n Error while reading message with no usable sender address (R=1Dk5R5-0002iQ-PT): at least one malformed recipient address: " " <> - missing or malformed local part
2005-06-21 09:35:25 1Dk5R5-0002iQ-PT == >" " <> <kontakt@$$$$$$$$$$.de> R=virtual_forward T=autoresponder defer (0): Failed to send message from autoresponder transport (1)

I can see in the Header file of this E-Mail that this is of course a Spam:

1Dk5R5-0002iQ-PT-H
root 0 0
<nofrom@email>
1119209187 1
-helo_name scanner04.XXXXXXXXXX.de
-host_address 192.168.1.20.52342
-host_name scanner04.XXXXXXXXXX.de
-interface_address 192.168.1.11.25
-received_protocol esmtps
-body_linecount 15
-tls_cipher TLSv1:AES256-SHA:256
NN /mnt/netapp/01/$$$$$$$$$$.de/$$$$$$$$$$.de9/Maildir/:kontakt@$$$$$$$$$$.de
1
kontakt@$$$$$$$$$$.de

210P Received: from scanner04.XXXXXXXXXX.de ([192.168.1.20])
        by mail01.XXXXXXXXXX.de with esmtps (TLSv1:AES256-SHA:256)
        (Exim 4.51)
        id 1Dk5R5-0002iQ-PT
        for kontakt@$$$$$$$$$$.de; Sun, 19 Jun 2005 21:26:27 +0200
204P Received: from [200.116.162.217] (helo=cable200-116-162-217.epm.net.co)
        by scanner04.XXXXXXXXXX.de with esmtp (Exim 4.30)
        id 1Dk5Qz-00014A-0Y
        for kontakt@$$$$$$$$$$.de; Sun, 19 Jun 2005 21:26:27 +0200
026T To: kontakt@$$$$$$$$$$.de
013F From: " " <>
017R Reply-To: " " <>
038  Date: Sun, 19 Jun 2005 15:26:10 -0500
010  Subject:
032I Message-ID: <%CUSTOM_A0[20-22]>
018  MIME-Version: 1.0
027  X-MimeOLE: %CUSTOM_MIMEOLE
054  Content-Type: multipart/alternative;
        boundary="--._"


What is the problem?
The problem is that this customer has an Autoresponder, and then Exim tries to send an E-Mail to <>...
And, of course, it does not find a valid recipient...
Another problem is that we have many users with Autoresponder... And they receive many Spam-E-Mail without a valid address... =:((

The Code of the .forward of this Account is:

if personal then mail file /mnt/netapp/01/$$$$$$$$$$.de/$$$$$$$$$$.de9/.vacation.msg from "$local_part@$domain" subject "Autoresponder" once /ramdisk/db/autoresponder.db once_repeat 10m endif

Now the question: how can I configure Exim to IGNORE unvalid sender for the autoresponder?
Or, better, how can I configure Exim to discard invalid E-Mail recipient?

Many thanks in advance!
--
_______________________________
Luca Bertoncello
-Programmierung / Mailserver-

IMS Internet-Media-Service GmbH
Bärensteiner Straße 7
01277 Dresden

Fon: +49 351 2112034
Fax: +49 351 2112020
email: bertoncello@???