[ILUG] Postfix SMTP server

[Kevin Philp]

I have started getting the following error messages from our Postfix server. 
Any ideas where the odd looking <M[5-]@address.com> is coming from? 

----------  Forwarded Message  ----------

Subject: Postfix SMTP server: errors from localhost.localdomain[127.0.0.1]
Date: Monday 25 October 2004 09:00
From: MAILER-DAEMON at server.cybercolloids.office (Mail Delivery System)
To: postmaster at cybercolloids.office (Postmaster)

Transcript of session follows.

 Out: 220 server.cybercolloids.office ESMTP Postfix (2.0.6) (Mandrake Linux)
 In:  HELO localhost
 Out: 250 server.cybercolloids.office
 In:  MAIL FROM:<FETCHMAIL-DAEMON at server.cybercolloids.office>
 Out: 250 Ok
 In:  RCPT TO:<M[5-]@address.com>
 Out: 501 Bad address syntax
 In:  QUIT
 Out: 221 Bye

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