On Apr 22, 2010, at 4:21 , Wietse Venema wrote: >> Hello folks, >> >> Postfix appears to be breaking RFC 5321 by speculatively injecting >> the entire envelope session passing over replies from the server. > > Oh, and while you're collecting the evidence, you may also want to > read up on RFC 2920 (SMTP Pipelining).
FTA, this is indeed result of RFC2920. The receiving daemon offers it and this extension is "silently active". Venema: don't take bug reports personally, better get a false alarm than a missed bug. Duchovni: the "critical mass" argument isn't so sound, we know the consequences of Microsoft applying it for a decade with IE.