MantisBT - General public affairs
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0000456General public affairspublic2010-05-21 00:572011-01-31 16:20
0000456: Mailing list subscription fails
When I tried to subscribe to the mailing list, my message was rejected as SPAM.

Below is the error message (I've removed my domain name since this issue will be public).

I used the email address associated with this Mantis account.
Delivery has failed to these recipients or distribution lists:
Your message wasn't delivered because of security policies. Microsoft Exchange will not try to redeliver this message for you. Please provide the following diagnostic text to your system administrator.

Diagnostic information for administrators:

Generating server:
#< #5.7.0 smtp; 554 5.7.0 Reject, id=19851-15 - SPAM> #SMTP#

Original message headers:

Return-Path: <>
X-Greylist: delayed 128 seconds by postgrey-1.31 at; Mon, 12 Apr 2010 00:10:37 CEST
Received: from ( [])
    (using TLSv1 with cipher RC4-MD5 (128/128 bits))
    (No client certificate requested)
    by (Postfix) with ESMTPS id A98631BF8174
    for <>; Mon, 12 Apr 2010 00:10:37 +0200 (CEST)
Received: from ([]) by ([]) with mapi; Sun, 11 Apr 2010
 18:08:27 -0400
From: "Bellamy, G. Richard" <>
To: "" <>
Date: Sun, 11 Apr 2010 18:08:24 -0400
Subject: subscribe
Thread-Topic: subscribe
Thread-Index: AcrZw4F3ivtd5nt3QFeHVkpCrQ0npw==
Message-ID: <>
Accept-Language: en-US
Content-Language: en-US
acceptlanguage: en-US
Content-Type: text/plain
MIME-Version: 1.0
No tags attached.
Issue History
2010-04-12 00:15rbellamyNew Issue
2010-04-26 21:22lukStatusnew => assigned
2010-04-26 21:22lukAssigned To => luk
2010-04-26 22:04lukNote Added: 0000447
2010-04-26 22:04lukStatusassigned => feedback
2010-04-26 22:22rbellamyNote Added: 0000448
2011-01-31 16:20lukStatusfeedback => assigned

2010-04-26 22:04   
I'm sorry that your message was treated as spam. But the main reason was that the message was positive in the Pyzor test (see [^]). Please check whether it is/was present in the Pyzor database.
2010-04-26 22:22   
1. A hash sharing system should never be used for boilerplate email - it's just too likely that the hash for a "subscribe" email will have been reported as spam.
2. We use a hosted service for our mail, and though it's on 1 of 150 blacklists, that's probably because someone else hosted on that box raised a red flag.
3. Blacklists in general don't really work, unless you personally know why the server in question is blacklisted. It's just too easy for Spammers to move from one IP to another, or for false-positives.
4. Most of the above is my opinion, so take it for what it's worth. What's next?