Re: Adelphia vs greylisting
Dave Warren <[email protected]>
| Newsgroups | gmane.mail.spam.greylist.user |
|---|---|
| Message-ID | <[email protected]> |
Barb Dijker wrote: > We had a problem with a cable company that would not retry soon after > the block (5 minutes), but would retry once at 24 hours and then > never again. I don't recall what company it was. So we tried > opening up our retry time to 25 hours. It didn't appreciably > increase spam, so that's where we left it. I hate one-off whitelisting. > > The spec doesn't say how soon one must retry. In some logic, for > some sites, waiting a day may make sense. Personally, I'm currently greylisting for 5 minutes, then whitelisting for 28 days from the last time the triplet was attempted (whether or not it was successful) I haven't seen much spam slipping in during the 24-hour and 28 day window that didn't also try a redeliverying between 5-minutes and 24-hours. If the zombie world changes I'll update my configuration appropriately, but this seems to reduce the negative impacting of greylisting rather significantly. I do tend to play with my greylisting period a lot, anywhere from 5 minutes to 60 seems to be around the same effectiveness, so I keep it short to avoid annoying users. -- I guess we'll be going down together, I mean getting off together, I mean ... That's Ok, I'll just press the button for the stimulator. Elevator! -- Homer Simpson