noreply@ junk coming through

[Kit Wong]

-----Original Message-----
From: mailscanner-bounces at lists.mailscanner.info [mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf Of Scott Silva
Sent: 24 September 2008 19:24
To: mailscanner at lists.mailscanner.info
Subject: Re: noreply@ junk coming through

on 9-24-2008 11:17 AM Alex Neuman van der Hans spake the following:
>> Short answer: yes.
>> 
>> Long answer: no. Well configured lists have real addresses. Well 
>> configured autoresponders and such are always properly configured.
> 
>I get system outage alerts about my Verizon T-1's with a noreply address. But it is different enough that the sendmail snip in the original reply wouldn't fire

>So I guess legitimacy is in the inbox of the receiver!
>Just take a little time to see if you do have any legit mail using noreply@ address.

Just notice a majority of these noreply@ junk mail are listed in URI_BLACK. 
I just need to pump the scores up on this.
Stupid question....where do I go to change the score?
I have 4 50_scores.cf

/etc/mail/spamassassin/updates_spamassassin_org/50_scores.cf
/usr/share/spamassassin/50_scores.cf
/var/lib/spamassassin/3.001009/updates_spamassassin_org/50_scores.cf
/var/lib/spamassassin/3.002004/updates_spamassassin_org/50_scores.cf

I read somewhere that changing 50_scores.cf is not recommended as it will be over written when it updates.
Do I stick it in /etc/mail/spamassassin/local.cf?