Hi

I have 2 mail hosts.  One works and one doesn't when getting mail  
from (some) aol users.  One handles my general email and one is for a  
customer whose server I run.  The customer's is having a problem

In both cases the data acl is

#!!# ACL that is used after the DATA command
check_message:
   require verify = header_sender

<snipped some irrelevant Virus checking>

   accept

---

There are at least 2 addresses at AOL that cannot send mail to any  
address on the customer server.  They get

-----Original Message-----
From: Mail Delivery Subsystem <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Sent: Wed, 24 Oct 2007 7:15 pm
Subject: Returned mail: Service unavailable

The original message was received at Wed, 24 Oct 2007 19:15:22 -0400  
(EDT)
from [EMAIL PROTECTED]


*** ATTENTION ***

Your e-mail is being returned to you because there was a problem with  
its
delivery.  The address which was undeliverable is listed in the section
labeled: "----- The following addresses had permanent fatal errors  
-----".

The reason your mail is being returned to you is listed in the section
labeled: "----- Transcript of Session Follows -----".

The line beginning with "<<<" describes the specific reason your e- 
mail could
not be delivered.  The next line contains a second error message  
which is a
general translation for other e-mail servers.

Please direct further questions regarding this message to the e-mail
administrator or Postmaster at that destination.

--AOL Postmaster



    ----- The following addresses had permanent fatal errors -----
<[EMAIL PROTECTED]>

    ----- Transcript of session follows -----
... while talking to mail.object.com.:
 >>> DATA
<<< 550 Administrative prohibition
554 <[EMAIL PROTECTED]>... Service unavailable
Final-Recipient: RFC822; [EMAIL PROTECTED]
Action: failed
Status: 5.2.0
Remote-MTA: DNS; mail.object.com
Diagnostic-Code: SMTP; 550 Administrative prohibition
Last-Attempt-Date: Wed, 24 Oct 2007 19:15:27 -0400 (EDT)
Received: from [EMAIL PROTECTED]
     by imo-m23.mx.aol.com (mail_out_v38_r9.3.) id 4.c54.1c0a6e01  
(65098)
      for <[EMAIL PROTECTED]>; Wed, 24 Oct 2007 19:15:22 -0400 (EDT)
Return-path: <[EMAIL PROTECTED]>
From: [EMAIL PROTECTED]
Message-ID: <[EMAIL PROTECTED]>
Date: Wed, 24 Oct 2007 19:15:22 EDT
Subject: (no subject)
To: [EMAIL PROTECTED]
MIME-Version: 1.0
Content-Type: multipart/alternative;  
boundary="-----------------------------1193267722"
X-Mailer: 9.0 SE for Windows sub 5043
X-Spam-Flag: NO


---

The logs on this end say:

2007-10-24 17:25:42 1IkpbZ-000CeU-Vc H=imo-d21.mx.aol.com  
[205.188.144.207] F=<[EMAIL PROTECTED]> rejected after DATA: there is  
no valid sender in any header line
Envelope-from: <[EMAIL PROTECTED]>
Envelope-to: <[EMAIL PROTECTED]>
P Received: from imo-d21.mx.aol.com ([205.188.144.207])
         by mail.object.com with esmtp (Exim 4.68)
         (envelope-from <[EMAIL PROTECTED]>)
         id 1IkpbZ-000CeU-Vc
         for [EMAIL PROTECTED]; Wed, 24 Oct 2007 17:25:42 -0600
P Received: from [EMAIL PROTECTED]
         by imo-d21.mx.aol.com (mail_out_v38_r9.3.) id 4.bd8.1f61f8bc  
(65098)
          for <[EMAIL PROTECTED]>; Wed, 24 Oct 2007 19:25:37 -0400 (EDT)
F From: [EMAIL PROTECTED]
I Message-ID: <[EMAIL PROTECTED]>
   Date: Wed, 24 Oct 2007 19:25:36 EDT
   Subject: (no subject)
T To: [EMAIL PROTECTED]
   MIME-Version: 1.0
   Content-Type: multipart/alternative;  
boundary="-----------------------------1193268336"
   X-Mailer: 9.0 SE for Windows sub 5043
   X-Spam-Flag: NO

---

However, there appears to be a valid From: line.  That person can  
receive email at that address and I have been corresponding with the  
other address person who doesn't work, with my general server (my  
address) and I can receive it fine.  There is no callback specified  
but if I simulate one using telnet, it passes.

What could be going on?

Thanks
Chad


---
Chad Leigh -- Shire.Net LLC
Your Web App and Email hosting provider
chad at shire.net




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