[Mailman-Users] Getting implicit destinattion even though To: field is correct

Aaron Smith Aaron.Smith at kzoo.edu
Mon Apr 24 09:07:06 EDT 2017

*FacePalm*  Well...that's embarrassing.  You are, of course, completely right.  I forgot to put the actual To: header in there.
Nothing to see here folks.....move along...move along....

-----Original Message-----
From: Mailman-Users [mailto:mailman-users-bounces+aaron.smith=kzoo.edu at python.org] On Behalf Of Robert Heller
Sent: Saturday, April 22, 2017 1:39 PM
To: Mark Sapiro <mark at msapiro.net>
Cc: mailman-users at python.org
Subject: Re: [Mailman-Users] Getting implicit destinattion even though To: field is correct

At Sat, 22 Apr 2017 10:23:59 -0700 Mark Sapiro <mark at msapiro.net> wrote:

> On 04/21/2017 12:15 PM, Aaron Smith wrote:
> > ... However, if I send a message to
> > testlist at mail01.example.com, it
> > is moderated for implicit destination.  Every single time.  And I 
> > KNOW that the To: field has the correct email address because I'm 
> > typing it in myself during a telnet session to port 25!  What am I 
> > missing here?
> The addresses in any To:, Cc:, Resent-To: or Resent-Cc: headers are 
> lower cased and if the local part of any of these matches the list's 
> internal name (which should be the lower case list name, i.e. the 
> list's real_name attribute lower cased), you should not get an 
> implicit destination hold.
> I.e., if the list's internal name it 'testlist' and the To: header 
> contains the address testlist at ... in any combination of upper/lower 
> case, the message should not be held for implicit destination.
> When the message is held for implicit destination, look at the Message
> Headers: in the held message view in the list's admindb interface. Do 
> they have the To: header you expect?

Since the OP is using a "telnet session to port 25" I wonder if he is confusing an *envelope header" with a message header.

If in the "telnet session to port 25" he is typing:

RCPT To testlist at mail01.example.com

And *failing* to include in the DATA section a line like:

To: testlist at mail01.example.com

Even though the RCPT To is correct, *mailman* still needs the
"To: testlist at mail01.example.com" *in the message itself* (in the header in the DATA part).


Robert Heller             -- 978-544-6933
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