Re: Greylisting BCP
Chris Lewis <[email protected]>
| Newsgroups | gmane.ietf.asrg |
|---|---|
| Message-ID | <[email protected]> |
On 11-10-24 10:33 AM, Murray S. Kucherawy wrote: >> -----Original Message----- >> From: [email protected] [mailto:[email protected]] On Behalf Of Martijn Grooten >> Sent: Wednesday, October 19, 2011 8:06 AM >> To: Anti-Spam Research Group - IRTF >> Subject: Re: [Asrg] Greylisting BCP >> >> Do people apply greylisting post-DATA in practise? Or is this really >> only something only performed in labs as it is the only way to >> determine whether causes false positives. > > I plan to do a survey of popular implementations. If none do, that section can be dropped. But someone suggested including it in the outline which leads me to believe that some implementation does. As a FYI, some (perhaps only historical now) implementations behave badly with post-DATA rejects. An old version of Exchange, in particular, treated even a post-data 5xx as "retry as quickly as possible". But I've not seen one in a while.