On Fri, 11 Mar 2011, Ian Gibbs wrote:
Dear all,
I have read http://wiki.list.org/pages/viewpage.action?pageId=4030676 FAQ 1.9
about implicit destination. I am sending directly To: the list with no other
recipients. The host_name setting is pumb.org.uk. The conversation I had with
the SMTP server is shown below. It still results in an implicit destination
error. Can anyone suggest why, please?
You have no To: header (or any other headers for that matter). The
recipient listed on a RCPT TO: command to the SMTP server (known in the
SMTP world as the "envelope recipient") is not the same as a To: header.
Since the Mailman list address was not found in the message's non-existent
To: or Cc: headers, it is an implicit destination.
To SMTP, headers are part of the message's data. They are completely
separate from the SMTP commands that tell an SMTP server what to do with
the message (otherwise, BCC could not work. A BCC recipient never appears
in the headers (or wouldn't be blind) but the BCC recipient must be in the
RCPT TO: SMTP command as how else would the destination server know to
deliver it to the BCC recipient).
user@workstation:~$ telnet server 25
Trying IP...
Connected to server.
Escape character is '^]'.
220 server ESMTP Exim 4.71 Fri, 11 Mar 2011 14:43:29 +0000
HELO workstation
250 server Hello workstation [89.16.174.50]
MAIL FROM:[email protected]
250 OK
RCPT TO:[email protected]
250 Accepted
DATA
354 Enter message, ending with "." on a line by itself
Subject:Testing from guinevere 3
This is a message 3
.
250 OK id=1Py3ZU-0003YI-Rz
QUIT
221 server closing connection
Connection closed by foreign host.
-- Larry Stone
[email protected]
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