tag:blogger.com,1999:blog-26753622.post186078244739219811..comments2024-03-12T10:01:50.959-05:00Comments on Spam Resource: All Things Deliverability: The Beatings Will Continue...ForeverAl Iversonhttp://www.blogger.com/profile/14312013852191097352noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-26753622.post-26753127642295026872010-01-09T21:46:59.864-06:002010-01-09T21:46:59.864-06:00Someone who behaves like a jerk has zero business ...Someone who behaves like a jerk has zero business running a blacklist, or even running filters for anything larger than an etch a sketch (or a P-III pizzabox running freebsd for self, girlfriend and pet dog).<br /><br />Run across that kind of genius (even at some largish ISPs, govt agencies etc) the same way I've run across great, brilliant people doing this - in over a decade of doing this (and you've been doing this rather longer than I have, Al, so ..)<br /><br />There ARE some cases where I simply up and block some IP space on a large scale - cheap datacenter with a revolving door type history of hosting one snowshoer after the other, for example. <br /><br />Or some ESPs that like to put coreg / leads IPs right next to IPs sending single optin, right next to IPs sending for "high value clients". If the collective reputation of their bad clients (and translated to dkim that'd mean repD = sum(repI1 + repI2 + ...), d= being the aggregate reputation of all the i= clients.<br /><br />[there's at least two or three ESPs that have tried keeping both types of clients, and found themselves blocked, and in one memorable case, multiple swips, so that one range - run by a former employee is snowshoe, another range is coreg, yet another range is fortune 500s .. spread across a /20] ..Suresh Ramasubramanianhttps://www.blogger.com/profile/06115337255064583852noreply@blogger.comtag:blogger.com,1999:blog-26753622.post-71316662175720236222010-01-09T12:12:41.455-06:002010-01-09T12:12:41.455-06:00But, you have pretty easy remediation steps, in ca...But, you have pretty easy remediation steps, in case a sender wants to reach out to you to ask for a block to be removed. Do you feel a remediation step is important? I kind of do, I think it implies a carrot vs a stick approach; if people clean up, you want to let their mail through, right? That would be an impetus to clean up. Would be curious as to what you think about that.Al Iversonhttps://www.blogger.com/profile/14312013852191097352noreply@blogger.comtag:blogger.com,1999:blog-26753622.post-52000415951941278852010-01-08T12:28:58.231-06:002010-01-08T12:28:58.231-06:00We list IPs on our blocklist using a statistical a...We list IPs on our blocklist using a statistical algorithm. If an IP exceeds a threshold of sending a certain amount of mail marked as spam over a certain time period, it is added to our internal BL. It is agnostic as to the source, it only focuses on content.<br /><br />Basically, it is an attempt to shift our blocks from our content filters to our IP filters.tzinkhttps://www.blogger.com/profile/18353306933958479862noreply@blogger.com