Problems with false positives

[Taylon Silmer <ta...@gmail.com>]

Hello guys!

I have a lot of mail servers running spamassassin and I never had false
positives problems.

Recently I installed more one server and I'm having a lot of false
positives problem with it. I understand that spamassassin is a software
and it can get wrong sometimes, the another servers get false positives
sometimes, but in this server it's really getting a lot more.

I use:

Postfix 2.3.3
Amavis 2.6.4
Spamassassin 3.2.5
CentOS 5.4 with linux kernel 2.6.18

The spamassassin rules are updated and the amavis and postfix
configuration files are the same in all servers (so, make no sense to be
some problem on the configuration files).

I cannot use whitelists because I have clients sending and receiving
e-mails from random IPs.

Somebody know what can I do?

* Sorry by my bad English.






Blog - http://www.focolive.org

Re: Problems with false positives

[Matus UHLAR - fantomas <uh...@fantomas.sk>]

On 19.01.10 10:52, Taylon Silmer wrote:
> I have a lot of mail servers running spamassassin and I never had false
> positives problems.
> 
> Recently I installed more one server and I'm having a lot of false
> positives problem with it. I understand that spamassassin is a software
> and it can get wrong sometimes, the another servers get false positives
> sometimes, but in this server it's really getting a lot more.
> 
> I use:
> 
> Postfix 2.3.3
> Amavis 2.6.4
> Spamassassin 3.2.5
> CentOS 5.4 with linux kernel 2.6.18
> 
> The spamassassin rules are updated and the amavis and postfix
> configuration files are the same in all servers (so, make no sense to be
> some problem on the configuration files).
> 
> I cannot use whitelists because I have clients sending and receiving
> e-mails from random IPs.

is it their mail that causes false positives?

-- 
Matus UHLAR - fantomas, uhlar@fantomas.sk ; http://www.fantomas.sk/
Warning: I wish NOT to receive e-mail advertising to this address.
Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu.
WinError #99999: Out of error messages.

Re: Problems with false positives

[Jason Bertoch <ja...@i6ix.com>]

On 1/19/2010 7:52 AM, Taylon Silmer wrote:
> Hello guys!
> 
> 
> I use:
> 
> Postfix 2.3.3
> Amavis 2.6.4
> Spamassassin 3.2.5
> CentOS 5.4 with linux kernel 2.6.18
> 
> The spamassassin rules are updated and the amavis and postfix
> configuration files are the same in all servers (so, make no sense to be
> some problem on the configuration files).
> 
> Somebody know what can I do?
> 

You might consider comparing the output of 'spamassassin -D --lint' to 
make _really_ sure all of them are loading the same plugins and such. 
Beyond that, your Bayes and AWL databases will be unique to each server 
unless you've implemented them in a central database.  Maybe Bayes is 
the source of the differences?

Have you determined which rules hit/miss for the same message across 
various server?

Re: Problems with false positives

[ram <ra...@netcore.co.in>]

On Tue, 2010-01-19 at 10:52 -0200, Taylon Silmer wrote:

> Hello guys!
> 
> I have a lot of mail servers running spamassassin and I never had false
> positives problems.
> 
> Recently I installed more one server and I'm having a lot of false
> positives problem with it. I understand that spamassassin is a software
> and it can get wrong sometimes, the another servers get false positives
> sometimes, but in this server it's really getting a lot more.
> 
> I use:
> 
> Postfix 2.3.3
> Amavis 2.6.4
> Spamassassin 3.2.5
> CentOS 5.4 with linux kernel 2.6.18
> 


Please post what rules are causing your FP's 


Have you patched the Date issue 
https://issues.apache.org/SpamAssassin/show_bug.cgi?id=6269