Re: Hotmail on sorbs?!? (and eliminating false positives)

2005-09-27 Thread Michael Monnerie
On Dienstag, 27. September 2005 07:51 email builder wrote: > The above can probably be done in Postfix with one or two restriction > classes. > > http://www.postfix.org/postconf.5.html#smtpd_restriction_classes > http://www.postfix.org/RESTRICTION_CLASS_README.html > > I'd be curious to hear if any

RE: Hotmail on sorbs?!? (and eliminating false positives)

2005-09-26 Thread email builder
--- Herb Martin <[EMAIL PROTECTED]> wrote: > > I am new to postfix and spamassassin, but we are already > > using greylist, and I liked a lot what you said here. > > > > How can I greylist messages by means of RBL checking? How > > should I setup Postfix to do that? > > > > Regards, > > Carl

RE: Hotmail on sorbs?!? (and eliminating false positives)

2005-09-26 Thread Herb Martin
> I am new to postfix and spamassassin, but we are already > using greylist, and I liked a lot what you said here. > > How can I greylist messages by means of RBL checking? How > should I setup Postfix to do that? > > Regards, > Carlos. I am not a Postfix expert, and cannot really call myself

Re: Hotmail on sorbs?!? (and eliminating false positives)

2005-09-26 Thread Carlos Zottmann
Hi !! I am new to postfix and spamassassin, but we are already using greylist, and I liked a lot what you said here. How can I greylist messages by means of RBL checking? How should I setup Postfix to do that? Regards, Carlos. 2005/9/24, Herb Martin <[EMAIL PROTECTED]>: > > From: Kai Schaetzl [

RE: Hotmail on sorbs?!? (and eliminating false positives)

2005-09-24 Thread Herb Martin
> From: Kai Schaetzl [mailto:[EMAIL PROTECTED] > Not sure how you combine that. AFAIR, greylisting is > tempfailing the first SMTP delivery attempt, correct? Do you > check the IP with RBLs and then tempfail it? So, you don't > tempfail *every* connection attempt like "traditional" > greylist

Re: Hotmail on sorbs?!? (and eliminating false positives)

2005-09-24 Thread Kai Schaetzl
Herb Martin wrote on Sat, 24 Sep 2005 07:17:06 -0500: > You RISK getting false positives with ANY RBL Of course, yes. One better speaks of a "cost-value ratio" (with cost being "false positives" for your clients and value being the rejected spam and viruses). In this respect the combined Spamh

RE: Hotmail on sorbs?!? (and eliminating false positives)

2005-09-24 Thread Herb Martin
> From: Kai Schaetzl [mailto:[EMAIL PROTECTED] > If you want to be safe, then use rbl+xbl.Spamhaus only. It is > safe *and* effective. If you add any other you risk getting > false positives. That is in the nature of RBLs and there is > no reason to complain about that fact or any of these RBLs