Antispam Performance
in [Microsoft Exchange]
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From: create_share on 14 May 2010 08:27 Hi! We have one Exchange 2007. Antispam filters are enabled and zen.spamhaus.org is configured as IP Block list provider but still we are receiving spam e-mails. How can we check if the Antispam filters and RBL are working properly? Thanks!
From: Rich Matheisen [MVP] on 14 May 2010 10:56 On Fri, 14 May 2010 05:27:01 -0700, create_share <createshare(a)discussions.microsoft.com> wrote: >We have one Exchange 2007. Antispam filters are enabled and zen.spamhaus.org >is configured as IP Block list provider but still we are receiving spam >e-mails. > >How can we check if the Antispam filters and RBL are working properly? Check the agent log. Also, in the "C:\Program Files\Microsoft\Exchange Server\Scripts" there are severl powershell scripts that will help you. They're named get-Antispam*.ps1 You should also understand that a DNSBL is not a spam filter, it's a connection filter. It doesn't check the contents of a message, it only deals with the IP address. The content filter provided with Exchange 2007 is fairly effective, but it's pretty inflexible. If you're getting more spam than you lie you can adjust the SCL levels. If you're blocking good e-mail you can relax the SCL levels. You can also try (and I'm not kidding when I say "try") to manage some of the spam yourself by keeping a keyword file updated -- but that's usually a Sisyphean task. --- Rich Matheisen MCSE+I, Exchange MVP
From: create_share on 14 May 2010 19:06
Thanks for your help. I found the problem. After running get-antispamupdates i got the result "Disabled" but in EMC is was showing Antispam updates Enabled. I disabled it from EMC and Re-enabled it and then ran get-antispamupdates again. Now it is Automatic. Thanks! "Rich Matheisen [MVP]" wrote: > On Fri, 14 May 2010 05:27:01 -0700, create_share > <createshare(a)discussions.microsoft.com> wrote: > > >We have one Exchange 2007. Antispam filters are enabled and zen.spamhaus.org > >is configured as IP Block list provider but still we are receiving spam > >e-mails. > > > >How can we check if the Antispam filters and RBL are working properly? > > Check the agent log. > > Also, in the "C:\Program Files\Microsoft\Exchange Server\Scripts" > there are severl powershell scripts that will help you. They're named > get-Antispam*.ps1 > > You should also understand that a DNSBL is not a spam filter, it's a > connection filter. It doesn't check the contents of a message, it only > deals with the IP address. > > The content filter provided with Exchange 2007 is fairly effective, > but it's pretty inflexible. If you're getting more spam than you lie > you can adjust the SCL levels. If you're blocking good e-mail you can > relax the SCL levels. You can also try (and I'm not kidding when I say > "try") to manage some of the spam yourself by keeping a keyword file > updated -- but that's usually a Sisyphean task. > --- > Rich Matheisen > MCSE+I, Exchange MVP > . > |