[Scspamcop] Re: Major Blockage

[N. Miller]

On Wed, 31 Oct 2007 15:53:06 -0800, Jon from Pro Refrigeraiton wrote:

> "Scott Grayban" <REMOVE.sgrayban at REMOVE.gmail.com> wrote in message 
> news:fgb44m$bgs$1 at news.spamcop.net...
>>
>>
>> Jon wrote:
>>> I have checked all IP's in our block and non seem to be listed on any 
>>> black
>>> list I can find. How would you suggest going about finding where the
>>> blocking is coming from?
>>>
>>
>> The bounced email will have that or look at your mail server logs.
> 
> Here is the bounced email
> 
> Your message did not reach some or all of the intended recipients.
> 
> Subject: RE:
> 
> Sent: 10/31/2007 4:14 PM
> 
> The following recipient(s) cannot be reached:
> 
> Neal Sanders on 10/31/2007 4:14 PM
> 
> There was a SMTP communication problem with the recipient's email server. 
> Please contact your system administrator.
> 
> <xxxxx.com #5.5.0 smtp;553 xxx.xxx.xxx.xxx mail rejected due to excessive 
> spam (Spamcop)>
> 
> 
> 
> However the IP listed in not on Spamcop's list.

I can configure my MTA to block on just about any component of the message
being presented by the relay agent, and tell that relay agent anything that
I want them to hear. I can reject based on a local RCPT
(%User_ID%@example.org), and I can tell the sender, "Blocked by SpamCop"
when I do that. I *don't* do things that way (telling the relay agent I am
refusing delivery from that SpamCop is the reason for the refusal), but it
certainly can be done.

Obviously, such a dishonest response from the MTA will send the sender on a
futile chase, because their message was not rejected on the IP address, an
the relay IP address may not be in *any* block list.

-- 
Norman
~Oh Lord, why have you come
~To Konnyu, with the Lion and the Drum