Slightly OT: Greylisting success or failure stories?

[Aleksandar Milivojevic]

Mike McMullen wrote:
> What kind of delay times are there for legit email
> getting through?

Depends on how often the sending server is doing queue runs.  It can be 
as low as couple of minutes, or as long as one hour.  Default Sendmail 
configuration on Fedora is to do queue run once per hour (this is 
ridiculus, for small installations, 15 minutes would be much more 
appropriate default), and I saw many other mail servers having similar 
defaults.

Also note that only the first email for particular (sending-ip, sender, 
recipient) triplet will be delayed.  All susequent emails for that 
triplet will not be delayed (unless tiplet expires from database).

-- 
Aleksandar Milivojevic <amilivojevic at pbl.ca>    Pollard Banknote Limited
Systems Administrator                           1499 Buffalo Place
Tel: (204) 474-2323 ext 276                     Winnipeg, MB  R3T 1L7