anti spam measures
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From: Roman Gelfand on 3 Jan 2010 10:02 I am running postfix with anti spam filter (policyd-weight, sqlgrey, grossd, dkim, senderid-milter, dspam) . With this configuration, I am down to under 10 spams a day. Looking at my backend server which is exchange 2007, I find that all of the remaining spam messages have spam confidence level of 7 or greater, which implies this is blatant spam. Is there spam filter software software that works with postfix that can perform checks similar to that of exchange 2007 spam confidence level? Thanks in advance
From: "Steve" on 3 Jan 2010 10:13 -------- Original-Nachricht -------- > Datum: Sun, 3 Jan 2010 10:02:32 -0500 > Von: Roman Gelfand <rgelfand2(a)gmail.com> > An: postfix users list <postfix-users(a)postfix.org> > Betreff: anti spam measures > I am running postfix with anti spam filter (policyd-weight, sqlgrey, > grossd, dkim, senderid-milter, dspam) . With this configuration, I am > down to under 10 spams a day. Looking at my backend server which is > exchange 2007, I find that all of the remaining spam messages have > spam confidence level of 7 or greater, which implies this is blatant > spam. > And your current Anti-Spam solution did not tag them as Spam? > Is there spam filter software software that works with postfix > that can perform checks similar to that of exchange 2007 spam > confidence level? > > Thanks in advance -- Preisknaller: GMX DSL Flatrate f�r nur 16,99 Euro/mtl.! http://portal.gmx.net/de/go/dsl02
From: Roman Gelfand on 3 Jan 2010 12:50 On Sun, Jan 3, 2010 at 10:13 AM, Steve <steeeeeveee(a)gmx.net> wrote: > > -------- Original-Nachricht -------- >> Datum: Sun, 3 Jan 2010 10:02:32 -0500 >> Von: Roman Gelfand <rgelfand2(a)gmail.com> >> An: postfix users list <postfix-users(a)postfix.org> >> Betreff: anti spam measures > >> I am running postfix with anti spam filter (policyd-weight, sqlgrey, >> grossd, dkim, senderid-milter, dspam) . With this configuration, I am >> down to under 10 spams a day. Looking at my backend server which is >> exchange 2007, I find that all of the remaining spam messages have >> spam confidence level of 7 or greater, which implies this is blatant >> spam. >> > And your current Anti-Spam solution did not tag them as Spam? > No. Since, I posted this message, I saw your discussion about s25r. I am trying it now. My first impression is that it is making a dent. You were, at one point, trying out geoip patched policyd-weight where you added points to a total score based on distance between servers. If so, would you mind sharing the patched script along with configuration file? > >> Is there spam filter software software that works with postfix >> that can perform checks similar to that of exchange 2007 spam >> confidence level? >> >> Thanks in advance > > -- > Preisknaller: GMX DSL Flatrate für nur 16,99 Euro/mtl.! > http://portal.gmx.net/de/go/dsl02 > Thanks again
From: Kenneth Marshall on 3 Jan 2010 14:59 On Sun, Jan 03, 2010 at 10:02:32AM -0500, Roman Gelfand wrote: > I am running postfix with anti spam filter (policyd-weight, sqlgrey, > grossd, dkim, senderid-milter, dspam) . With this configuration, I am > down to under 10 spams a day. Looking at my backend server which is > exchange 2007, I find that all of the remaining spam messages have > spam confidence level of 7 or greater, which implies this is blatant > spam. Is there spam filter software software that works with postfix > that can perform checks similar to that of exchange 2007 spam > confidence level? > > Thanks in advance > Hi Roman, To truly check how the Exchange 2007 spam confidence level works, try passing all of the mail from postfix to the Exchange server. I would be almost certain that more than 10 messages will make it through a day. If not, then just use the Exchange processing and you are done. If you do try the test, I would be interested in the results so please post them. Regards, Ken
From: "Steve" on 3 Jan 2010 15:37
-------- Original-Nachricht -------- > Datum: Sun, 3 Jan 2010 12:50:26 -0500 > Von: Roman Gelfand <rgelfand2(a)gmail.com> > An: Steve <steeeeeveee(a)gmx.net> > CC: postfix-users(a)postfix.org > Betreff: Re: anti spam measures > On Sun, Jan 3, 2010 at 10:13 AM, Steve <steeeeeveee(a)gmx.net> wrote: > > > > -------- Original-Nachricht -------- > >> Datum: Sun, 3 Jan 2010 10:02:32 -0500 > >> Von: Roman Gelfand <rgelfand2(a)gmail.com> > >> An: postfix users list <postfix-users(a)postfix.org> > >> Betreff: anti spam measures > > > >> I am running postfix with anti spam filter (policyd-weight, sqlgrey, > >> grossd, dkim, senderid-milter, dspam) . �With this configuration, I am > >> down to under 10 spams a day. �Looking at my backend server which is > >> exchange 2007, I find that all of the remaining spam messages have > >> spam confidence level of 7 or greater, which implies this is blatant > >> spam. > >> > > And your current Anti-Spam solution did not tag them as Spam? > > > No. > Since DSPAM is the Anti-Spam engine you are using, you should train DSPAM to catch those Spam mails. > Since, I posted this message, I saw your discussion about s25r. > I am trying it now. My first impression is that it is making a dent. > It's a cheep (in terms of resources) way to block a lot of unwanted mails. > You were, at one point, trying out geoip patched policyd-weight where > you added points to a total score based on distance between servers. > Yes. I implemented that into policyd-weight after reading about SNARE (Spatio-temporal Network-level Automatic Reputation Engine). > If so, would you mind sharing the patched script along with > configuration file? > I have no problem sharing this code but to be honest: The discussion does not belong here in the Postfix mailing list. > > > >> Is there spam filter software software that works with postfix > >> that can perform checks similar to that of exchange 2007 spam > >> confidence level? > >> > >> Thanks in advance > > > > -- > > Preisknaller: GMX DSL Flatrate f�r nur 16,99 Euro/mtl.! > > http://portal.gmx.net/de/go/dsl02 > > > > Thanks again > Please let's move that discussion out of the Postfix mailing list since it really does not belong here. Okay? -- GRATIS f�r alle GMX-Mitglieder: Die maxdome Movie-FLAT! Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome01 |