Re: Disable outbound smtp pipelining?

2012-06-07 Thread Jerry
On Wed, 06 Jun 2012 20:40:01 +0200 Benny Pedersen articulated: Den 2012-06-06 05:46, Curtis skrev: [snip] I better stop asking questions now since I might be getting ahead of my self if my assumption about smtpd_discard_ehlo_keyword_address_maps does not actually apply to outbound email...

Re: Disable outbound smtp pipelining?

2012-06-06 Thread Ralf Hildebrandt
* Curtis postfixu...@isparks.com: It seems we are running into an increased number of hosts that have broken smtp pipelining. We are able to resolve delivery issues to these hosts using the solution that Wieste recommended a couple weeks ago:

Re: Disable outbound smtp pipelining?

2012-06-06 Thread Wietse Venema
Curtis: smtp_discard_ehlo_keywords = pipelining,silent-discard (Again, this time without the d.) Aside from a little extra bandwidth, would this cause outbound deliveries to go horrendously slower on a busy mail server? The issue is NOT bandwidth (i.e. the width of a pipe). It's latency

Re: Disable outbound smtp pipelining?

2012-06-06 Thread Curtis
On 6/6/2012 8:45 AM, Wietse Venema wrote: Curtis: smtp_discard_ehlo_keywords = pipelining,silent-discard (Again, this time without the d.) Aside from a little extra bandwidth, would this cause outbound deliveries to go horrendously slower on a busy mail server? The issue is NOT bandwidth

Re: Disable outbound smtp pipelining?

2012-06-06 Thread Wietse Venema
Curtis: Yeah, I figured it would be a pretty significant slow down for hosts that support it... I just wasn't sure what percentage of hosts support pipelining. If only 10% of hosts were using it in the first place, the 40% extra delivery time lost on those hosts might be managable... but,

Re: Disable outbound smtp pipelining?

2012-06-06 Thread k...@rice.edu
On Wed, Jun 06, 2012 at 03:24:41PM -0400, Wietse Venema wrote: Curtis: Yeah, I figured it would be a pretty significant slow down for hosts that support it... I just wasn't sure what percentage of hosts support pipelining. If only 10% of hosts were using it in the first place, the 40%

Disable outbound smtp pipelining?

2012-06-05 Thread Curtis
It seems we are running into an increased number of hosts that have broken smtp pipelining. We are able to resolve delivery issues to these hosts using the solution that Wieste recommended a couple weeks ago: http://www.mail-archive.com/postfix-users@postfix.org/msg44135.html However, I'm