On Thu, Sep 30, 2010 at 04:18:47PM +0200, Ralf Hildebrandt wrote:
> I cannot say anything about the milter in use. A prior bug report of
> mine against "Smart Sendmail Filters"
>
> https://sourceforge.net/tracker/?func=detail&aid=2815073&group_id=131540&atid=721356
>
> "The sender address verification sends an HELO *before* the receiving
> server emits its SMTP banner. Thus, the probe (or the whole server)
> gets classified as "earlytalker" and (in my case) gets disconnected
> immediately. The verification probes must adhere to the SMTP protocol,
> otherwise they're worthless because they're generating false negatives."
>
> I have no doubt that the error is NOT in Postfix, but what exactly
> does the log excerpt mean? Which protocol error exactly is postscreen
> complaining about?
Do you have a tcpdump capture? From the above it sounds like HELO is
sent before the 220 banner. That's a protocol error.
--
Viktor.
