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Re: Rejecting spam

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Timothy Alberts Re: [CentOS] Rejecting spam
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Dan Carl wrote:
>   
>> -----Original Message-----
>> From: [email protected: centos-bo...@centos.org]On
>> Behalf Of Glenn
>> Sent: Tuesday, March 04, 2008 2:00 PM
>> To: CentOS mailing list
>> Subject: Re: [CentOS] Rejecting spam
>>
>>
>> At 02:35 PM 3/4/2008, you wrote:
>>
>>     
>>> Sorry, not a direct CentOS question, but I know there's a lot of
>>> experienced users on this list...I'm using CentOS with sendmail and
>>> spamassassin. I've got it configured with spamass-milter and it is
>>> working correctly. However, I was expecting to be able to reject
>>> mail that is marked as spam, not just deliver it as usual. Anyone
>>> know if it can be done and how? I know a milter can reject mail,
>>> because I've used milter-grelist in the past to give temporary
>>>       
>> fail messages
>>     
>
> Not really a good idea to reject all spam. Spam filtering is not that black
> and white.
> Suppose a legitmate email gets tagged as Spam.
> This does happen trust me and more than likely its a email your boss has
> been waiting for.
> You'll want a some way to retrieve it.
>   

I think it's a wonderful idea to not let spam into the server at all.  
If a legitimate sender is sending email that is inadvertently marked as
spam, it will be returned to sender and they will be notified.  That's 
actually why I'm trying to switch to a 'don't let it in to begin with'
policy.  Currently I use the spamassassin to mark spam and clients get 
their email and have a habit of giving the spam folder a glance over
looking for legitimate email.  Well, that completely defeats the purpose 
of marking them spam to begin with?

I'm basing this decision on having run an email server for the last 8
years, listening to the complaints of huge spam folders and mail being
'lost' in the trash because it was falsely marked as spam.

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Thread : Rejecting spam
1)
Timothy Alberts Sorry, not a direct CentOS question, but I know there's a lot of experienced users on this...
2)
Glenn Not sure, but I think you could use procmail to filter to a junk folder based upon parsing the...
3)
Milton Calnek mailscanner +1 Also, I have: FEATURE(`dnsbl', `sbl-xbl.spamhaus.org', `"571 ACCESS DENIED to...
4)
Les Mikesell MimeDefang is good too, and perhaps a little more efficient. It and clamav (if you want to tie in a...
5)
Timothy Alberts I also use all the dnsbl above plus spamcop.net which, I believe blocks far more spam than anything...
6)
Timothy Alberts That's exactly what I don't want to do. I don't want the mail being delivered to my system. That's...
7)
John Hinton The spamhaus RBLs are the most reliable in my opinion. They will kill about 60% of the spam and...
8)
Timothy Alberts BINGO That's exactly what I'm trying to do with spamass-milter. However it either won't do it, or...
9)
John Hinton It's how the milter is started. This is my slightly edited spamass-milter init.d file....
10)
John Hinton Oops! I knew there was another place to do this. In /etc/sysconfig/spamass-milter Here's my config...
11)
Timothy Alberts John that is perfect, exactly what I was looking for. Thank you and thanks to everyone that...
12)
John Hinton Does any 'man'? I normally start to get really worried about myself when I actually understand one...
13)
Scott Silva This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --============== 63084107=Content-Type:...
14)
Timothy Alberts OK, that's what I was suspicious of. I've been reading the sendmail docs for header tests thinking...
15)
Scott Silva This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --==============99469262=Content-Type:...
16)
Dan Carl Not really a good idea to reject all spam. Spam filtering is not that black and white. Suppose a...
17)
Timothy Alberts I think it's a wonderful idea to not let spam into the server at all. If a legitimate sender is...
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