Stuart Henderson wrote: > I had to guess a bit because the full information wasn't there - > full headers and log entries might help explain things...
Perhaps the following will be of more use than my previous information. I've used a packet sniffer to capture what goes on when my OpenBSD server sends one of these messages to the Exchange server: --- BEGIN SMTP TRANSCRIPT --- (openbsd) SYN (exchange) SYN,ACK (openbsd) ACK (exchange) 220 server.koett.ca Microsoft ESMTP MAIL Service ready at Wed, 7 Jan 2009 16:49:16 -0800 (openbsd) EHLO mail.cybernet.ca (exchange) 250-server.koett.ca Hello [154.5.74.158] 250-SIZE 250-PIPELINING 250-DSN 250-ENHANCEDSTATUSCODES 250-STARTTLS 250-X-ANONYMOUSTLS 250-AUTH NTLM 250-X-EXPS GSSAPI NTLM 250-8BITMIME 250-BINARYMIME 250-CHUNKING 250-XEXCH50 250 XRDST (openbsd) MAIL From:<> (exchange) 250 2.1.0 Sender OK (openbsd) RCPT To:<[email protected]> DATA (exchange) 250 2.1.5 Recipient OK 354 Start mail input; end with <CRLF>.<CRLF> (openbsd) Received: from localhost (localhost) by mail.cybernet.ca (8.13.4/8.13.4) id n0810Ler018239; Wed, 7 Jan 2009 17:00:36 -0800 (PST) Date: Wed, 7 Jan 2009 17:00:36 -0800 (PST) From: Mail Delivery Subsystem <[email protected]> Message-Id: <[email protected]> To: [email protected] MIME-Version: 1.0 Content-Type: multipart/report; report-type=delivery-status; boundary="n0810Ler018239.1231376436/mail.cybernet.ca" Subject: Postmaster notify: see transcript for details Auto-Submitted: auto-generated (postmaster-notification) This is a MIME-encapsulated message --n0810Ler018239.1231376436/mail.cybernet.ca The original message was received at Wed, 7 Jan 2009 17:00:21 -0800 (PST)from localhost with id n0810Leq018239 ----- The following addresses had permanent fatal errors ----- <[email protected]> (reason: 550 <[email protected]>: invalid address) ----- Transcript of session follows ----- .... while talking to mx00.1and1.com.: >>> DATA <<< 550 <[email protected]>: invalid address 550 5.1.1 <[email protected]>... User unknown <<< 554 no valid recipients --n0810Ler018239.1231376436/mail.cybernet.ca Content-Type: message/delivery-status Reporting-MTA: dns; mail.cybernet.ca Received-From-MTA: DNS; [153.5.129.153] Arrival-Date: Wed, 7 Jan 2009 17:00:21 -0800 (PST) Final-Recipient: RFC822; [email protected] Action: failed Status: 5.1.1 Remote-MTA: DNS; mx00.1and1.com Diagnostic-Code: SMTP; 550 <[email protected]>: invalid address Last-Attempt-Date: Wed, 7 Jan 2009 17:00:35 -0800 (PST) --n0810Ler018239.1231376436/mail.cybernet.ca Content-Type: text/rfc822-headers Return-Path: <MAILER-DAEMON> Received: from localhost (localhost) by mail.cybernet.ca (8.13.4/8.13.4) id n0810Leq018239; Wed, 7 Jan 2009 17:00:21 -0800 (PST) Date: Wed, 7 Jan 2009 17:00:21 -0800 (PST) From: Mail Delivery Subsystem <MAILER-DAEMON> Message-Id: <[email protected]> To: <[email protected]> MIME-Version: 1.0 Content-Type: multipart/report; report-type=delivery-status; boundary="n0810Leq018239.1231376421/mail.cybernet.ca" Subject: Returned mail: see transcript for details Auto-Submitted: auto-generated (failure) --n0810Ler018239.1231376436/mail.cybernet.ca-- (exchange) 250 2.6.0 <[email protected]> Queued mail for delivery (openbsd) QUIT --- END SMTP TRANSCRIPT --- Now, here is the message as delivered by Exchange: --- BEGIN DELIVERED MESSAGED --- Delivery has failed to these recipients or distribution lists: [email protected] The recipient's e-mail address was not found in the recipient's e-mail system. Microsoft Exchange will not try to redeliver this message for you. Please check the e-mail address and try resending this message, or provide the following diagnostic text to your system administrator. The following organization rejected your message: mx00.1and1.com. Diagnostic information for administrators: Generating server: mail.cybernet.ca [email protected] mx00.1and1.com #<mx00.1and1.com #5.1.1 SMTP; 550 <[email protected]>: invalid address> #SMTP# Original message headers: Return-Path: <MAILER-DAEMON> Received: from localhost (localhost) by mail.cybernet.ca (8.13.4/8.13.4) id n0810Leq018239; Wed, 7 Jan 2009 17:00:21 -0800 (PST) Date: Wed, 7 Jan 2009 17:00:21 -0800 From: Mail Delivery Subsystem <MAILER-DAEMON> Message-ID: <[email protected]> To: <[email protected]> MIME-Version: 1.0 Content-Type: text/plain Subject: Returned mail: see transcript for details Auto-Submitted: auto-generated (failure) --- END DELIVERED MESSAGE --- So it appears that sendmail is sending me notification of a delivery failure to [email protected], because my aliases file contains: MAILER-DAEMON: postmaster postmaster: root root: [email protected] Exchange made it confusing by dropping a lot of content from the message, while adding that "Exchange will not try to redeliver this message" when in fact Exchange seems to have had nothing to do with its delivery in the first place. So, what I still don't know is: 1. Why was sendmail trying to deliver anything to [email protected]? 2. How can I stop such behaviour? Thanks again, Richard Koett.
