Hello
I use Outlook 2000 as a client and Imail 6.02 as server
When outlook try to send a read receipt from a mail that have requested it I recieve a 550 error from the server.
The problem is that Outlook send the read receipt with null sender, but I have NOT set the SMTP Security option  REFUSE NULL <> Senders
 
The SMTP log is in the end of this message
 
What can I do?
Thanks in advance
 
PD: Microsoft says "The SMTP mail server does not have the ability to process the header item, Mail From: <> because it is based on an outdated RFC821 that used a conflicting programming example. You will only see this on old SMTP servers. "
 
 
20011120 120445 192.168.1.1     SMTPD (036E00DE) [192.168.1.1] connect 192.168.0.150 port 1073
20011120 120445 192.168.1.1     SMTPD 220 X1 Welcome to AYG
20011120 120445 192.168.1.1     SMTPD HELO francisco
20011120 120445 192.168.1.1     SMTPD (036E00DE) [192.168.0.150] HELO francisco
20011120 120445 192.168.1.1     SMTPD 250 hello ayg.com.ar
20011120 120445 192.168.1.1     SMTPD MAIL FROM: <>
20011120 120445 192.168.1.1     SMTPD 250 ok
20011120 120445 192.168.1.1     SMTPD (036E00DE) [192.168.0.150] MAIL FROM: <>
20011120 120445 192.168.1.1     SMTPD RCPT TO: <
[EMAIL PROTECTED]>
20011120 120445 192.168.1.1     SMTPD (036E00DE) [192.168.0.150] RCPT TO: <[EMAIL PROTECTED]>
20011120 120445 192.168.1.1     SMTPD [x] looking up isp.com.ar in HOSTS
20011120 120446 192.168.1.1     SMTPD 550 not local host isp.com.ar, not a gateway
20011120 120446 192.168.1.1     SMTPD (036E00DE) [192.168.0.150] ERR ayg.com.ar invalid user <[EMAIL PROTECTED]
20011120 120446 192.168.1.1     SMTPD QUIT
20011120 120446 192.168.1.1     SMTPD 221 Goodbye

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