[Mailman-Users] Can't hide sender of message

Do you mean they receive a single message from the list which is From:
both the list and the poster? If so, this is a cPanel issue which we
can't help with. See the FAQ at <http://wiki.list.org/x/sYA9>.

If on the other hand, you mean they receive two messages, one from the
list which is From: the list and one From: the poster, perhaps the
poster is including some list members in a CC or BCC, or this could
also be a cPanel issue.

In order to say more, we'd have to see the complete headers of both
messages.

They receive two messages, one from the list and one from the poster.

Here is the header from the poster:

Received: (qmail 11320 invoked from network); 8 Dec 2009 20:44:06 -0000
Received: from unknown (HELO m1pismtp01-023.prod.mesa1.secureserver.net)
([10.8.12.26])
(envelope-sender <angela.evans at bt.com>)
by smtp26-01.prod.mesa1.secureserver.net (qmail-1.03) with SMTP
for <tom at ramruva.com>; 8 Dec 2009 20:44:06 -0000
Received: from a2s47.a2hosting.com ([216.119.128.130])
by m1pismtp01-023.prod.mesa1.secureserver.net with ESMTP; 08 Dec 2009
13:44:05 -0700
Received: from smtp1.smtp.bt.com ([217.32.164.137])
by a2s47.a2hosting.com with esmtp (Exim 4.69)
(envelope-from <angela.evans at bt.com>)
id 1NI6uh-0004QP-Sv; Tue, 08 Dec 2009 15:44:04 -0500
Received: from E03MVC4-UKBR.domain1.systemhost.net ([193.113.197.116]) by
smtp1.smtp.bt.com with Microsoft SMTPSVC(6.0.3790.3959);
Tue, 8 Dec 2009 20:43:58 +0000
X-MimeOLE: Produced By Microsoft Exchange V6.5
Content-class: urn:content-classes:message
MIME-Version: 1.0
Content-Type: multipart/related;
type="multipart/alternative";
boundary="----_=_NextPart_001_01CA7847.2AAEA169"
Subject: [LSPTA Bulletin 22] Lincoln News- Holiday Boutique Countdown
Date: Tue, 8 Dec 2009 20:46:39 -0000
Message-ID:
<6A375F4747F4B14EB41AF6728C452AFF058023DF at E03MVC4-UKBR.domain1.systemhost.net>
X-MS-Has-Attach: yes
X-MS-TNEF-Correlator:
Thread-Topic: [LSPTA Bulletin 22] Lincoln News- Holiday Boutique Countdown
Thread-Index: Acp4R4oMftaqBO0+T/+5kewhonrw5w=From: <angela.evans at bt.com>
To: <bulletin-editor at lincolnschoolpta.net>,
<bulletin at lincolnschoolpta.net>
X-OriginalArrivalTime: 08 Dec 2009 20:43:58.0913 (UTC)
FILETIME=[2AC64B10:01CA7847]
X-AntiAbuse: This header was added to track abuse, please include it with
any abuse report
X-AntiAbuse: Primary Hostname - a2s47.a2hosting.com
X-AntiAbuse: Original Domain - lincolnschoolpta.net
X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12]
X-AntiAbuse: Sender Address Domain - bt.com
X-Nonspam: Whitelist


Here is the header from the list:

Received: (qmail 22283 invoked from network); 8 Dec 2009 20:44:25 -0000
Received: from unknown (HELO p3pismtp01-026.prod.phx3.secureserver.net)
([10.6.12.31])
(envelope-sender <bulletin-bounces at lincolnschoolpta.net>)
by smtp29.prod.mesa1.secureserver.net (qmail-1.03) with SMTP
for <tom at ramruva.com>; 8 Dec 2009 20:44:25 -0000
Received: from vms169129pub.verizon.net ([206.46.169.129])
by p3pismtp01-026.prod.phx3.secureserver.net with ESMTP; 08 Dec 2009
13:44:24 -0700
Received: from a2s47.a2hosting.com ([216.119.128.130])
by vms169129.mailsrvcs.net
(Sun Java(tm) System Messaging Server 6.3-7.04 (built Sep 26 2008; 32bit))
with ESMTP id <0KUC00BZOPLQA082 at vms169129.mailsrvcs.net> for
tom at ramruva.com
(ORCPT tj.sherlock at verizon.net); Tue, 08 Dec 2009 14:44:19 -0600 (CST)
X-Originating-IP: [216.119.128.130]
Received: from localhost ([127.0.0.1] helo¢s47.a2hosting.com)
by a2s47.a2hosting.com with esmtp (Exim 4.69)
(envelope-from <bulletin-bounces at lincolnschoolpta.net>)
id 1NI6uj-0004So-C7; Tue, 08 Dec 2009 15:44:05 -0500
Received: from smtp1.smtp.bt.com ([217.32.164.137]) by a2s47.a2hosting.com
with
esmtp (Exim 4.69) (envelope-from <angela.evans at bt.com>)
id 1NI6uh-0004QP-Sv; Tue, 08 Dec 2009 15:44:04 -0500
Received: from E03MVC4-UKBR.domain1.systemhost.net ([193.113.197.116])
by smtp1.smtp.bt.com with Microsoft SMTPSVC(6.0.3790.3959); Tue,
08 Dec 2009 20:43:58 +0000
X-MIMEOLE: Produced By Microsoft Exchange V6.5
Content-class: urn:content-classes:message
MIME-version: 1.0
Date: Tue, 08 Dec 2009 20:46:39 +0000
Message-id:

<6A375F4747F4B14EB41AF6728C452AFF058023DF at E03MVC4-UKBR.domain1.systemhost.net>
X-MS-Has-Attach: yes
X-MS-TNEF-Correlator:
Thread-topic: [LSPTA Bulletin 22] Lincoln News- Holiday Boutique Countdown
Thread-index: Acp4R4oMftaqBO0+T/+5kewhonrw5w=To: <bulletin-editor at lincolnschoolpta.net>, <bulletin at lincolnschoolpta.net>
X-OriginalArrivalTime: 08 Dec 2009 20:43:58.0913 (UTC)
FILETIME=[2AC64B10:01CA7847]
From: Lincoln School PTA Bulletin <bulletin at lincolnschoolpta.net>
Subject: [LSPTA Bulletin 23] Lincoln News- Holiday Boutique Countdown
X-BeenThere: bulletin at lincolnschoolpta.net
X-Mailman-Version: 2.1.11.cp3
Precedence: list
Reply-to: Bulletin-Editor at lincolnschoolpta.net
List-Id: Lincoln School PTA Bulletin
<bulletin_lincolnschoolpta.net.lincolnschoolpta.net>
List-Unsubscribe:

<http://lincolnschoolpta.net/mailman/options/bulletin_lincolnschoolpta.net>,
<mailto:bulletin-request at lincolnschoolpta.net?subject=unsubscribe>
List-Archive:
<http://lincolnschoolpta.net/pipermail/bulletin_lincolnschoolpta.net>
List-Post: <mailto:bulletin at lincolnschoolpta.net>
List-Help: <mailto:bulletin-request at lincolnschoolpta.net?subject=help>
List-Subscribe:

<http://lincolnschoolpta.net/mailman/listinfo/bulletin_lincolnschoolpta.net>,
<mailto:bulletin-request at lincolnschoolpta.net?subject=subscribe>
Content-type: multipart/mixed;
boundary="==============80370488203077477=="
Sender: bulletin-bounces at lincolnschoolpta.net
Errors-to: bulletin-bounces at lincolnschoolpta.net
X-AntiAbuse: This header was added to track abuse,
please include it with any abuse report
X-AntiAbuse: Primary Hostname - a2s47.a2hosting.com
X-AntiAbuse: Original Domain - verizon.net
X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12]
X-AntiAbuse: Sender Address Domain - lincolnschoolpta.net
X-Nonspam: Whitelist


Thanks

Please two things about the above message. It contains no Mailman
headers of any kind indicating it didn't come from a Mailman list. It
is addressed To: <bulletin-editor at lincolnschoolpta.net>,
<bulletin at lincolnschoolpta.net>

Would <bulletin-editor at lincolnschoolpta.net> be an alias for you?

Bulletin-editor at lincolnschoolpta.net is a subscriber of the mailing list and
the only one able to post to the mailing list. E-mail sent to
Bulletin-editor is forwarded to my e-mail account.
Bulletin at lincolnschoolpta.net is the mailing list and is managed through
mailman.

Here is the header of the third e-mail. It looks like it includes list info
and mailman info:

Received: (qmail 11845 invoked from network); 8 Dec 2009 22:28:52 -0000
Received: from unknown (HELO p3pismtp01-016.prod.phx3.secureserver.net)
([10.6.12.16])
(envelope-sender <bulletin-bounces at lincolnschoolpta.net>)
by smtp18-02.prod.mesa1.secureserver.net (qmail-1.03) with SMTP
for <tom at ramruva.com>; 8 Dec 2009 22:28:52 -0000
Received: from a2s47.a2hosting.com ([216.119.128.130])
by p3pismtp01-016.prod.phx3.secureserver.net with ESMTP; 08 Dec 2009
15:28:52 -0700
Received: from localhost ([127.0.0.1] helo=a2s47.a2hosting.com)
by a2s47.a2hosting.com with esmtp (Exim 4.69)
(envelope-from <bulletin-bounces at lincolnschoolpta.net>)
id 1NI8XM-0008Mx-AG; Tue, 08 Dec 2009 17:28:04 -0500
Received: from smtp4.smtp.bt.com ([217.32.164.151])
by a2s47.a2hosting.com with esmtp (Exim 4.69)
(envelope-from <angela.evans at bt.com>)
id 1NI8XI-0007S6-Jq; Tue, 08 Dec 2009 17:28:01 -0500
Received: from E03MVC4-UKBR.domain1.systemhost.net ([193.113.197.116]) by
smtp4.smtp.bt.com with Microsoft SMTPSVC(6.0.3790.3959);
Tue, 8 Dec 2009 22:27:55 +0000
X-MimeOLE: Produced By Microsoft Exchange V6.5
Content-class: urn:content-classes:message
MIME-Version: 1.0
Content-Type: multipart/mixed;
boundary="----_=_NextPart_001_01CA7855.B0326989"
Date: Tue, 8 Dec 2009 22:25:55 -0000
Message-ID:
<6A375F4747F4B14EB41AF6728C452AFF02200439 at E03MVC4-UKBR.domain1.systemhost.net>
X-MS-Has-Attach: yes
X-MS-TNEF-Correlator:
Thread-Topic: [LSPTA Bulletin 24] Lincoln News- Cookie Dough is here!!!
Thread-Index: Acp4R4oMftaqBO0+T/+5kewhonrw5wADd5PM
References:
<6A375F4747F4B14EB41AF6728C452AFF058023DF at E03MVC4-UKBR.domain1.systemhost.net>
To: <Bulletin-Editor at lincolnschoolpta.net>,
<bulletin-editor at lincolnschoolpta.net>, <bulletin at lincolnschoolpta.net>
X-OriginalArrivalTime: 08 Dec 2009 22:27:55.0904 (UTC)
FILETIME=[B04F9800:01CA7855]
From: Lincoln School PTA Bulletin <bulletin at lincolnschoolpta.net>
Subject: [LSPTA Bulletin 24] Lincoln News- Cookie Dough is here!!!
X-BeenThere: bulletin at lincolnschoolpta.net
X-Mailman-Version: 2.1.11.cp3
Precedence: list
Reply-To: Bulletin-Editor at lincolnschoolpta.net
List-Id: Lincoln School PTA Bulletin
<bulletin_lincolnschoolpta.net.lincolnschoolpta.net>
List-Unsubscribe:
<http://lincolnschoolpta.net/mailman/options/bulletin_lincolnschoolpta.net>,
<mailto:bulletin-request at lincolnschoolpta.net?subject=unsubscribe>
List-Archive:
<http://lincolnschoolpta.net/pipermail/bulletin_lincolnschoolpta.net>
List-Post: <mailto:bulletin at lincolnschoolpta.net>
List-Help: <mailto:bulletin-request at lincolnschoolpta.net?subject=help>
List-Subscribe:
<http://lincolnschoolpta.net/mailman/listinfo/bulletin_lincolnschoolpta.net>,
<mailto:bulletin-request at lincolnschoolpta.net?subject=subscribe>
Sender: bulletin-bounces at lincolnschoolpta.net
Errors-To: bulletin-bounces at lincolnschoolpta.net
X-AntiAbuse: This header was added to track abuse, please include it with
any abuse report
X-AntiAbuse: Primary Hostname - a2s47.a2hosting.com
X-AntiAbuse: Original Domain - ramruva.com
X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12]
X-AntiAbuse: Sender Address Domain - lincolnschoolpta.net
X-Nonspam: Whitelist

TomSherlock

So the original post was sent to both
Bulletin-editor at lincolnschoolpta.net and
Bulletin at lincolnschoolpta.net. You received a copy of the list post
from the list and you also received the copy of the message that was
sent to Bulletin-editor at lincolnschoolpta.net.

If the only copy you received from the list was the one sent from the
list to Bulletin-editor at lincolnschoolpta.net, you can suppress this
copy from the list by checking 'nodups' for the
Bulletin-editor at lincolnschoolpta.net member on the Membership
Management... -> Membership List page in the list's admin interface or
by setting the "Avoid duplicate copies of messages?" option to Yes on
the user options page for Bulletin-editor at lincolnschoolpta.net.


This is a totally different message with different Message-ID and
subject from the ones you posted previously.

This one is addressed to
I.e. it is sent twice to different spellings of
bulletin-editor at lincolnschoolpta.net which may account for your have
received 3 copies because MTAs should consider
Bulletin-Editor at lincolnschoolpta.net and
bulletin-editor at lincolnschoolpta.net to be separate recipients.

Mark Sapiro writes:
N.As I'm sure Mark knows, distinguishing case in mailboxes is a
deprecated practice, and local mail delivery systems are strongly
encouraged to avoid it. Nevertheless, the practice *does exist*, and
therefore originating and intermediate MTAs *must* distinguish those
addresses, and forward to all of them. The originating MTA cannot
know what the ultimate destination's policy is, and it must not guess.

TomSherlock writes:
First, note the "from localhost" entry in the second series. This
means that Mailman is reinjecting the message on the same host. It
doesn't appear in the first series; Mailman did *not* handle that
message, it was relayed *directly to you* by the MTA at a2s47.
Second, apparently the list knows you as "tj.sherlock at verizon", but
it's likely the direct mail was originally addressed to "tom at ramruva".

I would guess that the sender is BCC'ing you (perhaps to help you
identify any problems?) It's hard to say because I don't know
Microsoft Exchange, but it is quite possible that the mail from the
sender's host is going to multiple recipients (ie, other than the
list) at the point where her MUA injects it. If there were a single
message to the list only, the first MTA in the chain will often have a
"for mailing-list" clause in the Received header. Its absence doesn't
prove anything, but certainly leaves open the possibility of multiple
recipients.

A lower probability is that there's a rule or alias at a2s47's MTA
that BCCs you on list mail, again for debugging purposes.
(Coincidentally, yesterday I implemented exactly that feature using
the same MTA (Exim 4) for a list I run, although the purpose was
different. It's just one line in /etc/aliases.)

As unlikely as that seems, based on the Received chain posted, I would
say a problem with Mailman is even less likely. I just don't see how
Mailman could be involved with the direct mail.

I'm sorry we can't find a Mailman issue here, in the sense that we
could help you with that.

Your reply, Mark's and Michael have definitely helped me to sort this out.

So you are trying to figure out how Mailman can prevent a third party from mailing a third party?

No, I am trying use the mailman feature which allows the poster's e-mail to
be shown as coming from the list, not from the poster.

However, based on the analysis of the others, regular may be getting mixed
in with the mailing list.


LuKreme wrote: