Javier Navarro wrote:
>>>> Thanks for your answers. >>>> >>>> Just a question. If I use "-2" at RDNS will it help to stop any spam? I= >>>> don't see how this delay may help. It will not help yourself but maybe the world. But "-2" is indeed almost nothing. >From my experience also -20 or -30 is a still working value, but these settings also use more resources (concurrent connections) at your place so maybe it is not an option for you. The rDNS check fails only on servers without *any* rDNS, here this applies only to some Korean netblocks but I am neither an ISP nor in Spain... >>>> Now I'm using Spamhaus, Ordb and Spamcop as RBL servers, do you advise any= >>>> others? Here are three addresses for multi-List-lookups: Openrbl: http://openrbl.org/ drbcheck: http://www.moensted.dk/spam/ DECLUDE: http://www.declude.com/Articles.asp?ID=97 With these I checked sample IPs of incoming spam and adjusted my filters to the following: relays.ordb.org.:1 (may be unnecessary) psbl.surriel.com.:0 list.dsbl.org.:0 cbl.abuseat.org.:0 dul.dnsbl.sorbs.net.:-20 dynablock.njabl.org.:-10 I like psbl very much: They list very quickly, but only on spam received in their spam traps. And they automatically de-list very soon. This should have an impact on legitimate mail only when it originates from a server *continuously* emitting spam. I checked outgoing IPs from some major freemail services and found psbl listings for these IPs every couple of months which were removed / delisted within hours. Also I set up filters for Davide's greylisting module, cf. http://www.xmailserver.org/glst-mod.html (In theory greylisting gives you for previously unknown connections an extra amount of time for blacklists to catch up. In practice I don't know whether customers will accept delays for certain mails) And on top of that I activated an SPF filter the following way: When the filter yields "pass", greylisting is skipped and mail will be delivered immediately. This typically also reduces the problems greylisting has with ezmlm mailing software. Greetings Thomas Berger - To unsubscribe from this list: send the line "unsubscribe xmail" in the body of a message to [EMAIL PROTECTED] For general help: send the line "help" in the body of a message to [EMAIL PROTECTED] - To unsubscribe from this list: send the line "unsubscribe xmail" in the body of a message to [EMAIL PROTECTED] For general help: send the line "help" in the body of a message to [EMAIL PROTECTED] - To unsubscribe from this list: send the line "unsubscribe xmail" in the body of a message to [EMAIL PROTECTED] For general help: send the line "help" in the body of a message to [EMAIL PROTECTED]
