Re: Stress docs update
This is now updated. Wietse Other measures to off-load zombies The postscreen(8) daemon, introduced with Postfix 2.8, provides additional protection against mail server overload. One postscreen(8) process handles all connections from "new" SMTP clients, and allows only well-behaved clients to talk to a Postfix SMTP server process. By keeping spambots away, postscreen(8) leaves more SMTP server processes available for legitimate clients, and delays the onset of server overload conditions.
Re: Stress docs update
On 05/03/12 05:14, Rob Sterenborg wrote: >> >> Credits > > According to the POSTSCREEN_README, postscreen doesn't do greylisting at > all: postscreen and greylisting are different things. The below is your > patch adapted with a partial copy-paste from the POSTSCREEN_README. > When a client passes the deep protocol tests, postscreen sends it a 4xx; that's essentially greylisting. But, there's no need to mention that on STRESS_README: it can be inferred from POSTSCREEN_README.
RE: Stress docs update
> -Original Message- > From: owner-postfix-us...@postfix.org [mailto:owner-postfix- > us...@postfix.org] On Behalf Of DTNX Postmaster > Sent: Thursday, May 03, 2012 10:43 AM > To: postfix users > Subject: Re: Stress docs update > > Please let me know if this isn't the right format, style and such; > > $ diff -u STRESS_README.html STRESS_README-postscreen.html > --- STRESS_README.html2012-05-03 10:20:36.0 +0200 > +++ STRESS_README-postscreen.html 2012-05-03 10:26:27.0 > +0200 > @@ -520,11 +520,12 @@ > server. Other clients are tarpitted, and will never get a chance > to affect mail server performance. > > - At some point in the future, Postfix may come with a simple > -front-end daemon that does basic greylisting and pipelining detection > -to keep zombies and other ratware away from Postfix itself. This > -would use the "pass" service type which has been available in > -stable Postfix releases since Postfix 2.5. > + Since version 2.8, Postfix ships with a front-end daemon called > +postscreen(8) that does basic > +greylisting and pipelining detection to keep zombies and other > ratware > +away from Postfix itself. For further information and implementation > +details, see POSTSCREEN_README. > + > > Credits According to the POSTSCREEN_README, postscreen doesn't do greylisting at all: postscreen and greylisting are different things. The below is your patch adapted with a partial copy-paste from the POSTSCREEN_README. -- Rob --- STRESS_README.html 2012-05-03 10:54:00.624335965 +0200 +++ STRESS_README-postscreen.html 2012-05-03 10:58:40.638712109 +0200 @@ -503,11 +503,14 @@ server. Other clients are tarpitted, and will never get a chance to affect mail server performance. - At some point in the future, Postfix may come with a simple -front-end daemon that does basic greylisting and pipelining detection -to keep zombies and other ratware away from Postfix itself. This -would use the "pass" service type which has been available in -stable Postfix releases since Postfix 2.5. + Since version 2.8, Postfix ships with a front-end daemon called +postscreen(8) that performs triage +on multiple inbound SMTP connections at the same time. While a single +postscreen(8) process keeps zombies away from Postfix SMTP server +processes, more Postfix SMTP server processes remain available for +legitimate clients. For further information and implementation +details, see POSTSCREEN_README. + Credits
Re: Stress docs update
On May 1, 2012, at 18:32, Wietse Venema wrote: > Michael Orlitzky: >> At the bottom of the stress readme, >> >> http://www.postfix.org/STRESS_README.html#other >> >> there is an allusion to what would eventually become postscreen. Might >> as well update it with a sentence and a link to POSTSCREEN_README.html? > > Right. Who has time? > > Wietse Please let me know if this isn't the right format, style and such; $ diff -u STRESS_README.html STRESS_README-postscreen.html --- STRESS_README.html 2012-05-03 10:20:36.0 +0200 +++ STRESS_README-postscreen.html 2012-05-03 10:26:27.0 +0200 @@ -520,11 +520,12 @@ server. Other clients are tarpitted, and will never get a chance to affect mail server performance. - At some point in the future, Postfix may come with a simple -front-end daemon that does basic greylisting and pipelining detection -to keep zombies and other ratware away from Postfix itself. This -would use the "pass" service type which has been available in -stable Postfix releases since Postfix 2.5. + Since version 2.8, Postfix ships with a front-end daemon called +postscreen(8) that does basic +greylisting and pipelining detection to keep zombies and other ratware +away from Postfix itself. For further information and implementation +details, see POSTSCREEN_README. + Credits HTH, Jona
Re: Stress docs update
Michael Orlitzky: > At the bottom of the stress readme, > > http://www.postfix.org/STRESS_README.html#other > > there is an allusion to what would eventually become postscreen. Might > as well update it with a sentence and a link to POSTSCREEN_README.html? Right. Who has time? Wietse
Stress docs update
At the bottom of the stress readme, http://www.postfix.org/STRESS_README.html#other there is an allusion to what would eventually become postscreen. Might as well update it with a sentence and a link to POSTSCREEN_README.html?
