RE: [cobalt-users] dnsbl advise...

[wcstaff <wcstaff@xxxxxxxxxxxx>]

> -----Original Message-----
> From: cobalt-users-admin@xxxxxxxxxxxxxxx 
> [mailto:cobalt-users-admin@xxxxxxxxxxxxxxx] On Behalf Of Dan Kriwitsky
> Sent: Tuesday, October 07, 2003 12:42 AM
> To: cobalt-users@xxxxxxxxxxxxxxx
> Subject: RE: [cobalt-users] dnsbl advise...
> 
> > I have been thinking that I might want to implement at least 
> > one dnsbl list to protect our server from spam.  I want a 
> > list that does not block a lot but a list that blocks enough 
> > (am I picky or what?).  Anyway I would like to hear what 
> > other people use and what they recommend.
> 
> There was a rather extensive discussion of this on the list a while
> back. Decisions on which to use, whether to just tag or block really
> depend a lot on your circumstances and the needs of your 
> customers. It's
> pretty much OT for this list.
> http://list.cobalt.com/pipermail/cobalt-users/2003-March/088092.html
> Just ignore any use of osirusoft.com since it's gone as is 
> monkeys.com.
> Other Sendmail changes to block by subject: 
> http://list.cobalt.com/pipermail/cobalt-users/2003-July/093712.html
> There's also lots of discussions in the archives about using 
> mailscanner
> and the various DNSBLs. http://www.moensted.dk/spam/ has 
> links to a lot
> of them.
> 
> -- 
> C2003 Dan Kriwitsky
> 
> Please reply to the list only. Off list replies are not read.
>  
> 
I have found this method to be unreliable. If one of the dnsbl servers are
offline, you will get errors and incomplete message handling. Since it
happened to us too many times and customers complained, we feel it is not a
safe way to slow the spam down. So we went back to mailscanner, etc.
Tom