Re: [9fans] opposite of bloom filter

2010-11-13 Thread Bruce Ellis
crap i was right the first time. suffixes from .com to .crazy-tool.com On Sun, Nov 14, 2010 at 1:54 PM, Bruce Ellis wrote: > oops "prefixes are common". it's hot and i'm still wingless. > > brucee > > On Sun, Nov 14, 2010 at 1:52 PM, Bruce Ellis wrote: >> grep -f is very efficient. you can extra

Re: [9fans] opposite of bloom filter

2010-11-13 Thread Bruce Ellis
oops "prefixes are common". it's hot and i'm still wingless. brucee On Sun, Nov 14, 2010 at 1:52 PM, Bruce Ellis wrote: > grep -f is very efficient. you can extract it to a lib if you like. > please think about this and peek at the code before replying. i > understand the code because i was luck

Re: [9fans] opposite of bloom filter

2010-11-13 Thread Bruce Ellis
grep -f is very efficient. you can extract it to a lib if you like. please think about this and peek at the code before replying. i understand the code because i was lucky enough to be in the room when it was written. a negatie bloom sounds good but your positives will (potentially) collide. so t

Re: [9fans] opposite of bloom filter

2010-11-13 Thread Lyndon Nerenberg (VE6BBM/VE7TFX)
> okay, there must be more to the story. why do you need crypto > secure burner email addresses to avoid spam? If I could tell you that, I wouldn't need them.

Re: [9fans] opposite of bloom filter

2010-11-13 Thread erik quanstrom
> There aren't many, but at least one that I care about exists. The > case is one-off throw away addresses. When I send a message, I > generate an address crypto-based on the recipient and the time-frame I > expect a response. I don't want mail coming back outside the > specified response period

Re: [9fans] opposite of bloom filter

2010-11-13 Thread erik quanstrom
> > ladd Nov 13 04:08:12 Disallowed gossinternational.com!ruiohfsd > > (gossinternational.com/124.172.212.142) to blocked name > > quanstro.net!b94cd358e11d3ffb43628c10bc786087 > > > > i think the idea of spooling email is largely discredited. > > it opens up the possiblity for backscatter spam,

Re: [9fans] opposite of bloom filter

2010-11-13 Thread Lyndon Nerenberg (VE6BBM/VE7TFX)
> Tell the accepting site to strip +* from all the email addresses > before checking. There aren't that many cases like that. There aren't many, but at least one that I care about exists. The case is one-off throw away addresses. When I send a message, I generate an address crypto-based on the

Re: [9fans] opposite of bloom filter

2010-11-13 Thread Russ Cox
> One problem with this is handling wildcarded addresses. How do you indicate > (say) lyndon+* is allowable in a bloom filter, where the '+' is an > arbitrary (to the upstream) symbol. Tell the accepting site to strip +* from all the email addresses before checking. There aren't that many cases l

Re: [9fans] opposite of bloom filter

2010-11-13 Thread Lyndon Nerenberg (VE6BBM/VE7TFX)
> i think the idea of spooling email is largely discredited. It's not a spam avoidance trick. It's how I get around arbitrary blockage of SMTP/submission port injection when I'm not sitting at home. If you read your mail on a laptop, it's the easiest way around all the ISP/Hotel/Public-WIFI filt

Re: [9fans] opposite of bloom filter

2010-11-13 Thread erik quanstrom
On Sat Nov 13 17:28:09 EST 2010, lyn...@orthanc.ca wrote: > > The purpose is allowing an spooling (store+forward) mail relay > > to learn which addresses are not accepted by the actual maildrop > > (which is connected by an uucp-link, so no direct smtp chat), > > to get rid of the thousands silly e

Re: [9fans] opposite of bloom filter

2010-11-13 Thread Lyndon Nerenberg (VE6BBM/VE7TFX)
> This requires the remote uucp site to give you a Bloom > filter with all the valid addresses inserted, but that seems > unavoidable. I don't know how the opposite-of-Bloom-filter > approach would work anyway. One problem with this is handling wildcarded addresses. How do you indicate (say) lynd

Re: [9fans] opposite of bloom filter

2010-11-13 Thread Russ Cox
> I'm currently looking for the opposite of an bloom filter, which > may have false negatives but no false positives. > > The purpose is allowing an spooling (store+forward) mail relay > to learn which addresses are not accepted by the actual maildrop > (which is connected by an uucp-link, so no di

Re: [9fans] opposite of bloom filter

2010-11-13 Thread Lyndon Nerenberg (VE6BBM/VE7TFX)
> The purpose is allowing an spooling (store+forward) mail relay > to learn which addresses are not accepted by the actual maildrop > (which is connected by an uucp-link, so no direct smtp chat), > to get rid of the thousands silly error bounces from brute force > attacks on email addresses. Very(

[9fans] opposite of bloom filter

2010-11-13 Thread Enrico Weigelt
Hi folks, I'm currently looking for the opposite of an bloom filter, which may have false negatives but no false positives. The purpose is allowing an spooling (store+forward) mail relay to learn which addresses are not accepted by the actual maildrop (which is connected by an uucp-link, so no