Messages in this thread | | | From | Keith Owens <> | Subject | Re: VGER does gradual SPF activation (FAQ matter) | Date | Fri, 16 Jun 2006 03:05:18 +1000 |
| |
"jdow" (on Mon, 12 Jun 2006 16:03:46 -0700) wrote: >Greylist those who have not subscribed. Let their email server try >again in 30 minutes. For those who are not subscribed it should not >matter if their message is delayed 30 minutes. And so far spammers >never try again.
Not true. I greylist and my recent logs show a pattern of spam code that tries 5 times at exactly 5 minute intervals, before finally giving up. Other spam code tries two or three times at one hour intervals. All designed by spammers to bypass greylist systems.
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |