On Tue, Mar 01, 2011, Geoff Shang wrote about "Re: mail issues questions": > >Yahoo and Hotmail are very important. Why did you set up SPF and DKIM? > > SPF and DKIM are technologies which should make it more likely that your > mail will be accepted, not less.
If you set them up *incorrectly*, it does make your mail less likely to be accepted. E.g., if I say using SPF that mail from xyz.com should be coming from mailer.xyz.com, and yet send such mail using somewhere.com's mail server (e.g., because somewhere.com is my upstream internet provider and I want to use their mail server), then my mail will be rejected. > It turned out that another Roadrunner customer who had subscribed > willingly to one of our mailing lists had decided that they didn't want to > receive it anymore, and rather than unsubscribe normally, they were > marking messages which came from this list as spam. Roadrunner's systems > then automatically flagged all mail from our server as spam, meaning that > no Roadrunner customer could receive any Email from our server at all. This, and similar, anecdotes are examples of flawed spam filtering techniques. The whole point of spam is that *a lot* of people get it. If just one person complains, it most likely *isn't* spam. -- Nadav Har'El | Tuesday, Mar 1 2011, 25 Adar I 5771 n...@math.technion.ac.il |----------------------------------------- Phone +972-523-790466, ICQ 13349191 |Isn't Disney World a people trap operated http://nadav.harel.org.il |by a mouse? _______________________________________________ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
