On Tue, Jun 05, 2012 at 09:46:16PM -0600, Curtis wrote:
> However, I'm not sure I fully understand why this fixes the problem
> for outbound email. On outbound email, Postfix is acting as the
> client and therefore one might think that
> smtpd_discard_ehlo_keyword_address_maps would not have any effect,
> since this setting is supposed to suppress EHLO keywords in response
> to a client.
Correct the Postfix SMTP server-specific setting has no effect on
Postfix SMTP client behaviour.
> Does smtpd_discard_ehlo_keyword_address_maps also
> ignore EHLO keyword responses it receives on outbound connections?
NO.
> I'm guessing so, because unless something else changed, the solution
> worked.
The observations are erroneous.
> Does anyone have any
> experience with just turning it off completely for all hosts? Which,
> I suppose would be done like this:
I've never had to work-around remote PIPELINING issues at remote
sites and I ran a fairly busy MTA plant delivering ~2M messages
per day. Some people have reported a small number of sites for
which they needed work-arounds, but you should not be seeing
a lot of remote peers with the issue unless there is a problem
with a firewall at your site. Fix that.
--
Viktor.
