On Sat, 18 Nov 2006 19:45:30 +0100 "MK [ [EMAIL PROTECTED] ]" <[EMAIL PROTECTED]> wrote:
> just curious about this: > > i noticed, that some mailserver loctaed in europe were blocking mails > from specific subnets at all - for example saying something like > "550 we do not accept mails from china" for mails from 60.16.x.x range... > > is someone on this list using this kind of an "IP range blacklist" which > is completely blocked by its MTAs - and, if so, which IPs are blocked - > and why? I don't (yet) block complete countries but if that's what you're looking for then look at http://countries.nerd.dk/ It *IS NOT A BLACKLIST* !!!! It is just a list. What an administrator does with it is up to that admin. Just like all the other lists. SpamCop doesn't block anybody. SpamHaus doesn't block anybody. MAPS doesn't block anybody. Etc. They just provide lists that meet certain criteria and make them publicly available. Some administrators use them to block certain sites. Others use them to modify spam scores with spamassassin rules. NONE of them are BLOCKING lists. They are just lists. There's even one out there that lists every IP address in IPv4 and IPv6 address space. If you are being blocked based on a "spam type" list like SpamCop you need to find out why you are on the list and try to get removed. If you are being blocked by a "generalized" list (list of countries, list of ISP dynamic netblocks, etc.) then you need to contact the ADMIN THAT IS BLOCKING you and ask to be whitelisted around the block. You can't get removed from a generalized list because they aren't based on controllable behavior, they are based on the physical characteristics of your connection to the Internet. I use SpamCop as an absolute blocking list because they are very good about automatically de-listing sites when spam reports stop and they are easy to get de-listed from manually when you fix a spam problem. But, I have a few IP addresses whitelisted around the spamcop check because some places that don't generally send spam get listed because of the nature of their business. Mailing list sites get listed because many people are too stupid to figure out how to unsubscribe from a list they joined. they just start reporting list mail as spam. I also have a server farm called bigfootinteractive.com whitelisted because they handle commercial mailings for many large U.S.A. companies like Walgreens, Northwest Airlines, Capital One Financial, and others. People open accounts at these companies and request their "newsletters" then when they decide te newsletter (advertising) isn't what they expected they start reporting it as spam rather than just READING the email to find out how to stop them from being sent. I have considered blocking entire contries like .kr and .cn and .br because my customers NEVER get legitimate mail from those countries and they account for a CONSIDERABLE amount of the spam that comes in. If I can drop all connections from them at the SMTP envelope level it's just that much less work that amavisd-new has to do. I can whitelist certain IP ranges around those blocks easily so if there is a legitimate mail sender they only need to contact me through alternate means (I maintain gmail addresses for this purpose) to be whitelisted. In fact, after typing this, I think I'll go work up an announcement to our customers and have a few country-wide blocks implemented by next weekend. Thank you for prompting me to add another layer to our spam blocking. Gerald ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ AMaViS-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/amavis-user AMaViS-FAQ:http://www.amavis.org/amavis-faq.php3 AMaViS-HowTos:http://www.amavis.org/howto/
