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I have 2 sm servers:

one running SM Pro 4.3

the other running SM Ent 5.5

both use the same external Spam Server VM to spam check

But some clients on th e4.3 server seem to get more spam.

would moving them over to the other server be better or do they spam filter in the same way?

Hoping to be 3rd time lucky as my last two posts on different subjects have yet to be answered

I use 5.5 and get almost zero spam. There are occasional messages that make it through, but nothing to write home about.

The client in question has the following settings:

Low Add "Junk E-Mail" to subject line
Medium Move to Junk E-Mail folder
High Delete message

scoring is as follows:

SpamAssassin 0-30
Custom Headers 0-0
Bayesian Filtering 10
SPF 0-30
Reverse DNS 20
Spam Haus 20
SpamCop 20

Yet they tellme VERY rarely do they get them coming to the junk folder it all seems to simply go in as low and its clearly not

This is what I have. There are varying opinions on this, and I am sure someone will chime in and tell me I am doing it wrong, but it works for us with almost zero false positives and almost zero spam.

This is the SPAM Check TAB:

    Custom Headers              0-30       
    Bayesian Filtering            10       
    SPF                                 0-30           
    Reverse DNS                   50           
    RBL: barracuda central    50           
    RBL: surriel                      50           
    RBL: zen spamhaus         50   

The weight thresholds are:

Low = 30 - Prefix with SPAM

Medium= 40 - Prefix with SPAM

High = 50 - Delete the Message

you dont get custom headers as a choice in 4.3 and whwt settings do you have for the folowing as they are not out of the box

    RBL: barracuda central     
    RBL: surriel                               
    RBL: zen spamhaus          

b.barracudacentral.org = 50

psbl.surriel.com = 50

zen.spamhaus.org = 50