RE: [swinog] Huge retry delays in mail from Sunrise - swinog

27 Mar 2007

--- "Kurt A. Schumacher" &lt;Kurt.Schumacher(a)schumi.ch&gt; wrote:
...
  Just a guess: 
 The more retries to a certain SMTP destination, the longer the retry
 interval...leads to exponential delivery times. 
no, it's quite sporadic: some emails are retried wihtin 10 minutes, 
and some were delaying for hours.

...
  Pure greylisting is - just like blacklistsing - is
useless or leads to
 unexpected behavior without a well-maintained and monitored whitelist for a
 corporate or ISP e-mail system. 
it is actually a well-maintained whitelist, but of course sometimes 
exceptions happen... 