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All the Perl that's Practical to Extract and Report

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  • If your focus in on saving the bandwidth (man, that's a lotta e-mail!), then you need to do as much upfront testing as possible (before the client gets to the "data" section of their e-mail). You may also not want to REJECT, which would double the bandwidth with bouncebacks (not sure if the original message is bounced back, too).

    I love Postfix -- they have some really great UCE [] measures. I had some problems with "A or MX record" thing (reject_unknown_client?) -- that would block things like stories that were e-mailed to our users off of a Web site (you know -- that "E-mail this Story" link), e-newsletters or from my friend's Tennis Ladder [] site, who's hostname wasn't configured properly. When you see those type of examples, you could hand-add them to /etc/hosts and then remember to cp that file into Postfix's chroot jail (/var/spool/postfix in my case). I ended up just taking it out all together, it was so annoying. But you prolly don't have the number or type of users I have to support. :)


    • For Postfix, I reject during the SMTP handshake, not bouncing it with checks later. Amavis doesn't bounce it either... we just swallow the spam. And I don't bounce anything from my procmail tests or clamscan tests. The only bounces I generate are $ (provided they aren't a spammed-to-death address).
      • Randal L. Schwartz
      • Stonehenge