It is a new month, and therefore, a new point on my
email graph. A couple interesting things this month: one, you can tell I went on vacation, and probably also that I knew Heather was gone the week before, so I wasn't emailing her as much either. Two, spam has now hit the 30% mark (note: the "received mail" does not include spam). Three, the size of email is getting bigger. Even though I received less email this month than the last couple months, the mailbox hit 100 megs for the month.
Posted by
Jon Daley on
August 3, 2005, 10:24 am
| Read 5183 times
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Although my main email comes through Lime Daley, I have not cancelled my snurgle account, and thus I still get 800 spams a month on that account.
Postgrey is an implementation of greylisting for Postfix (a great mailserver).
Greylisting is a spam blocking mechanism that depends on spammers not implementing e-mail SMTP standards correctly.
Postgrey was installed yesterday morning on snurgle, and I have not received a single spam on that machine since. Presumably the spammers will get smarter, and greylisting won't work after some amount of time. But, for now, it works great.
As Peter Venable said last night, it is an arms race, both sides trying to keep up with the other.
(And I happen to have "inside" information that someone is working on an additional feature of greylisting to make it even more effective, and hopefully the spammers don't know that yet)
Any guesses on how long it takes spammers to implement a workaround?
Perhaps I should stop telling people about how great it is.
The spam filters have been working amazingly well, I didn't get a single spam on the two machines that are using postgrey. The alumni server does not use postgrey, and that is the biggest source of spam, and then a handful of harvested email addresses from newsgroups, etc.