[postfix-users] Question about smtp_client_connection_count_limit
Georg Käfer
gkaefer at backbone.co.at
Mi Dez 2 12:33:34 CET 2009
-----Ursprüngliche Nachricht-----
Von: postfix-users-bounces+gkaefer=backbone.co.at at de.postfix.org [mailto:postfix-users-bounces+gkaefer=backbone.co.at at de.postfix.org] Im Auftrag von Ralf Hildebrandt
Gesendet: Mittwoch, 02. Dezember 2009 12:04
An: postfix-users at de.postfix.org
Betreff: Re: [postfix-users] Question about smtp_client_connection_count_limit
* Georg Käfer <gkaefer at backbone.co.at>:
> Sympthom:
> my postfix/dovecot server stops connection requests on port 25 if the
> mail reject limit exceeds around 400 per minute. Port 25 is available
> but no 220 promt is coming. So I assume not enough smtp or amavis
> deamons on port 10024 10025 are available.
Postfix logs that fact.
What's in the logs?
--
Ralf Hildebrandt
Geschäftsbereich IT | Abteilung Netzwerk
Charité - Universitätsmedizin Berlin
Campus Benjamin Franklin
Hindenburgdamm 30 | D-12203 Berlin
Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962
ralf.hildebrandt at charite.de | http://www.charite.de
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Mein log der betreffenden zeit heute:
Dec 2 09:28:00 mail2 postfix/anvil[31780]: statistics: max connection rate 18/60s for (smtp:82.32.162.192) at Dec 2 09:22:20
Dec 2 09:28:00 mail2 postfix/anvil[31780]: statistics: max connection count 4 for (smtp:213.55.71.242) at Dec 2 09:23:20
Dec 2 09:28:00 mail2 postfix/anvil[31780]: statistics: max message rate 18/60s for (smtp:82.32.162.192) at Dec 2 09:22:22
Dec 2 09:28:00 mail2 postfix/anvil[31780]: statistics: max recipient rate 152/60s for (smtp:82.32.162.192) at Dec 2 09:21:18
Dec 2 09:28:00 mail2 postfix/anvil[31780]: statistics: max cache size 103 at Dec 2 09:27:56
Dec 2 09:38:00 mail2 postfix/anvil[31780]: statistics: max connection rate 18/60s for (smtp:unknown) at Dec 2 09:33:39
Dec 2 09:38:00 mail2 postfix/anvil[31780]: statistics: max connection count 4 for (smtp:115.73.106.196) at Dec 2 09:28:19
Dec 2 09:38:00 mail2 postfix/anvil[31780]: statistics: max message rate 8/60s for (smtp:77.74.14.176) at Dec 2 09:28:41
Dec 2 09:38:00 mail2 postfix/anvil[31780]: statistics: max recipient rate 38/60s for (smtp:123.50.56.24) at Dec 2 09:29:59
Dec 2 09:38:00 mail2 postfix/anvil[31780]: statistics: max cache size 102 at Dec 2 09:28:14
Dec 2 09:48:00 mail2 postfix/anvil[31780]: statistics: max connection rate 18/60s for (smtp:unknown) at Dec 2 09:45:05
Dec 2 09:48:00 mail2 postfix/anvil[31780]: statistics: max connection count 2 for (smtp:62.227.200.84) at Dec 2 09:39:11
Dec 2 09:48:00 mail2 postfix/anvil[31780]: statistics: max message rate 8/60s for (smtp:94.41.154.84) at Dec 2 09:41:35
Dec 2 09:48:00 mail2 postfix/anvil[31780]: statistics: max recipient rate 37/60s for (smtp:41.112.213.24) at Dec 2 09:41:20
Dec 2 09:48:00 mail2 postfix/anvil[31780]: statistics: max cache size 118 at Dec 2 09:43:22
Dec 2 09:58:00 mail2 postfix/anvil[31780]: statistics: max connection rate 18/60s for (smtp:unknown) at Dec 2 09:54:55
Dec 2 09:58:00 mail2 postfix/anvil[31780]: statistics: max connection count 2 for (smtp:117.195.99.27) at Dec 2 09:48:01
Dec 2 09:58:00 mail2 postfix/anvil[31780]: statistics: max message rate 6/60s for (smtp:117.241.193.40) at Dec 2 09:48:56
Dec 2 09:58:00 mail2 postfix/anvil[31780]: statistics: max recipient rate 30/60s for (smtp:84.127.188.202) at Dec 2 09:57:07
Dec 2 09:58:00 mail2 postfix/anvil[31780]: statistics: max cache size 110 at Dec 2 09:51:24
Dec 2 10:10:38 mail2 postfix/anvil[31784]: statistics: max connection rate 16/60s for (smtp:87.238.209.101) at Dec 2 10:06:41
Dec 2 10:10:38 mail2 postfix/anvil[31784]: statistics: max connection count 4 for (smtp:59.95.129.85) at Dec 2 10:02:59
Dec 2 10:10:38 mail2 postfix/anvil[31784]: statistics: max message rate 16/60s for (smtp:87.238.209.101) at Dec 2 10:06:39
Dec 2 10:10:38 mail2 postfix/anvil[31784]: statistics: max recipient rate 76/60s for (smtp:119.155.71.225) at Dec 2 10:06:24
Dec 2 10:10:38 mail2 postfix/anvil[31784]: statistics: max cache size 94 at Dec 2 10:02:22
Dec 2 10:20:38 mail2 postfix/anvil[31784]: statistics: max connection rate 5/60s for (smtp:222.219.138.81) at Dec 2 10:19:19
Dec 2 10:20:38 mail2 postfix/anvil[31784]: statistics: max connection count 3 for (smtp:84.17.11.114) at Dec 2 10:20:13
Dec 2 10:20:38 mail2 postfix/anvil[31784]: statistics: max message rate 5/60s for (smtp:117.196.133.238) at Dec 2 10:11:55
Dec 2 10:20:38 mail2 postfix/anvil[31784]: statistics: max recipient rate 8/60s for (smtp:117.200.74.231) at Dec 2 10:13:42
Dec 2 10:20:38 mail2 postfix/anvil[31784]: statistics: max cache size 52 at Dec 2 10:19:38
Dec 2 10:30:38 mail2 postfix/anvil[31784]: statistics: max connection rate 5/60s for (smtp:222.219.138.81) at Dec 2 10:21:35
Dec 2 10:30:38 mail2 postfix/anvil[31784]: statistics: max connection count 1 for (smtp:212.156.174.232) at Dec 2 10:20:39
Dec 2 10:30:38 mail2 postfix/anvil[31784]: statistics: max message rate 5/60s for (smtp:222.219.138.81) at Dec 2 10:21:37
Dec 2 10:30:38 mail2 postfix/anvil[31784]: statistics: max recipient rate 12/60s for (smtp:59.93.55.211) at Dec 2 10:22:32
Dec 2 10:30:38 mail2 postfix/anvil[31784]: statistics: max cache size 44 at Dec 2 10:27:28
Dec 2 10:40:38 mail2 postfix/anvil[31784]: statistics: max connection rate 8/60s for (smtp:119.152.95.184) at Dec 2 10:34:33
Dec 2 10:40:38 mail2 postfix/anvil[31784]: statistics: max connection count 2 for (smtp:119.152.95.184) at Dec 2 10:33:49
Dec 2 10:40:38 mail2 postfix/anvil[31784]: statistics: max message rate 8/60s for (smtp:119.152.95.184) at Dec 2 10:34:35
Dec 2 10:40:38 mail2 postfix/anvil[31784]: statistics: max recipient rate 64/60s for (smtp:119.152.95.184) at Dec 2 10:34:35
Dec 2 10:40:38 mail2 postfix/anvil[31784]: statistics: max cache size 51 at Dec 2 10:39:07
Dec 2 10:50:38 mail2 postfix/anvil[31784]: statistics: max connection rate 4/60s for (smtp:80.249.81.70) at Dec 2 10:41:15
Dec 2 10:50:38 mail2 postfix/anvil[31784]: statistics: max connection count 3 for (smtp:117.102.44.141) at Dec 2 10:47:29
Dec 2 10:50:38 mail2 postfix/anvil[31784]: statistics: max message rate 4/60s for (smtp:80.249.81.70) at Dec 2 10:41:17
Dec 2 10:50:38 mail2 postfix/anvil[31784]: statistics: max recipient rate 19/60s for (smtp:117.102.44.141) at Dec 2 10:47:35
Dec 2 10:50:38 mail2 postfix/anvil[31784]: statistics: max cache size 64 at Dec 2 10:50:08
So nochmal in die main.cf bez ratelimits geschaut:
anvil_status_update_time = 600s
anvil_rate_time_unit = 60s
smtpd_client_connection_rate_limit = 50
smtpd_client_connection_count_limit = 10
smtpd_client_message_rate_limit = 50
smtpd_client_recipient_rate_limit = 10
smtpd_client_event_limit_exceptions = $mynetworks, "IP of my mailfirewall"
default_process_limit = 500
wenn ich also 20 smtps konfiguriere und im log dann "max connection rate 18/60s" lese, dann scheint es mir naheliegend, dass das 20er limit in Summe überschritten wird.
d.h. wenn ich mit "-o smtp_client_connection_count_limit=10" das limit auf 10 setze und mehr als 20smtp konfiguriere, dann erhöhe ich die Wahrscheinlichkeit, dass für nutzmails mehr Ressourcen verbleiben.
Und mit smtpd_client_event_limit_exceptions = $mynetworks, "IP of my mailfirewall" kann ich davon ausnahmen machen?
Liebe Gruesse,
Georg
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