Funny you should mention SpamAssassin's SPF Checks... I was thinking the same
thing, but I have been having problems with my SpamAssassin doing SPF checks.
It seems that if I have SA configured to do SPF checks, EVERY SINGLE piece of
mail always gets SPF_HELO_PASS from SA, no matter what the real results of the
SPF test really are. I have seen forged mail come in with my Postfix SPF
checker identifying it as bogus mail, but then SA still shows SPF_HELO_PASS.
Postfix is now configured to automatically reject the bogus ones before SA even
gets it.
But I'm confused about my SA configuration and why it's not catching it.
Anyhow, I digress. I know this is the TMDA list, not the SA list, but if anyone
wants to drop hints to me with a direct reply rather than polluting the list,
I'll be happy to hear them.
David
----- Original Message ----
From: Arik Raffael Funke <[EMAIL PROTECTED]>
To: tmda-users@tmda.net
Sent: Monday, December 4, 2006 7:38:30 PM
Subject: Re: filter by mailserver
Hi,
is that not already covered by any SPF checks? Given that you have
defined a SP for your domain, SpamAssassin should already be taking care
of this. Have you enabled SpamAssassin's SPF checks? If you are not
using SA, I believe I have seen a SPF script for TMDA somewhere in the
wiki or you could look for a stand-alone SPF checker.
Best regards,
Arik
Julie S. Lin wrote:
> Hi
>
> what yer saying is absolutely correct, hence my desire to filter by
> specifying a mail server
> is this possible? i'm hopping spammers can't easily forge outgoing
> server identity
>
> David Hoffman wrote:
>
>> If what you mean is that spam is getting through because the spammer
>> forges an address that is on your whitelist, then the simple answer is
>> don't put that address in your whitelist.
>>
>> If you put your own address into your whitelist, or your own domain,
>> then any spammer can forge it, and it will go through.
>>
>> See:
>> http://wiki.tmda.net/TmdaFaq#head-e81137818ea55d7e15d5822687715793af7062ea
>>
>>
>>
>> ----- Original Message ----
>> From: Julie S. Lin <[EMAIL PROTECTED]>
>> To: tmda-users@tmda.net
>> Sent: Monday, December 4, 2006 1:14:12 PM
>> Subject: filter by mailserver
>>
>> Hi
>>
>> is there a way to filter by originating mailserver?
>>
>> the rule "from [EMAIL PROTECTED] ok" still allows spam clever enough to
>> forge the from field.
>>
>> i'd like to write the filter such that mail originating from
>> "[EMAIL PROTECTED]" is OK.
>>
>> or have spammers figured out how to forge originating mail server
>> identity too?
>>
>> J
>>
>> _____________________________________________
>> tmda-users mailing list (tmda-users@tmda.net)
>> http://tmda.net/lists/listinfo/tmda-users
>>
>>
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>
>
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