Re: [SA-list] mail delay when checks are DOWN? 

We were successful to speed it up from 12 to 25 mails per minute, but here we 
run into the limitation of our mailservers chain with processing the complete 
request. When we had the chance to open more than one connection at a time like 
Dirk suggested – e.g. 100 – we could go around this easily. 

 

Mit freundlichen Grüßen 

 

Ralf Minuth 

Teamleitung Server/Anwendungen 

 

Mobil 

BETRIEBSKRANKENKASSE 

Hühnerposten 2, 20097 Hamburg 

www.bkk-mobil-oil.de (www.bkk-mobil-oil.de) 

 

Telefon: 040 3002-60301 

Telefax: 040 3002-960301 

E-Mail:  [email protected] (mailto:[email protected]) 

 
Auch 2012 kein Zusatzbeitrag - jetzt Mitglieder werben und belohnt werden. 
Nähere Infos finden Sie hier: www.bkk-mobil-oil.de/mitgliederwerbung 
(http://www.bkk-mobil-oil.de/mitgliederwerbung) 


Von: Servers Alive Discussion List [mailto:[email protected]] Im Auftrag von 
Viktor Sokol
Gesendet: Donnerstag, 22. September 2011 20:01
An: Servers Alive Discussion List
Betreff: Re: [SA-list] mail delay when checks are DOWN? 

 

Hello Dirk,

Just checked my historical alerts.
September 11th, peak 52 emails per minute. I belive its not a limit, I just had 
52 entries down at the same time. 
I do have a primary SMTP server on the same local network.

p.s. having total ~ 1300 entries.




Thursday, September 22, 2011, 1:01:00 PM, you wrote: 

Just for the test we did a loop of sending 200 mails via the queue.
What we see is that between the generation of the mail and the actual send of 
the last mail (mail 200 that is) we have about 16 minutes.  We're using a 
remote mailserver (mailserver on the internet).   That means that the queue was 
able to send about 12 mails per minute.  When using a local mailserver we will 
be able to send more mails.
 
 
Developper of the component will have a look at the component to see if it's 
possible to change the sender into using several sender threads.  We do have to 
see what impact this would have on the code and if we can via a parameter limit 
the number of threads.  I can imagine that some SMTP server only want a few 
connections from the same system….
Will get back on this beginning next week.
 
 
 
dirk
From: Servers Alive Discussion List [mailto:[email protected]] On Behalf Of 
[email protected]
Sent: Thursday, September 22, 2011 5:46 PM
To: Servers Alive Discussion List
Subject: [SA-list] mail delay when checks are DOWN?
 
Hi,
 
we had 166 DOWN checks this morning, normally we have some 0 to 5. This were 
all PING checks (SK) each with 2 dependant checks (1 NT process, 1 NT service). 
Yes, that was bad!
 
The systems were „not existent“, so the PING was not executed:
   ERR: problem resolving the name (BKKXENAPP077)
   ERR: problem resolving the name (Winsock could not resolve the host name 
(11004))
 
The alert is configured to send SMTP mail when 1 time down (and when up again), 
the checking schedule starts 5:45. Check times: every 3 minutes. The status 
summary mail is configured to be sent “approximately at” 5:50, our 
normal check cycle lasts about 10-12 minutes, so I expect the status mail to be 
there around 6:05.
 
According to the logfile, the check cycle ( 567- 567) started at 05:48:39, the 
next one ( 568- 568) at 06:07:07.
 
Now we had this effect:
 
The 1st alert mail: generated 05:48:50, received 05:48:55
The 10th alert mail: generated 05:57:55, received 05:58:38
The ~100th alert mail: generated, 06:01:34 received 06:14:54
The last alert mail: generated 06:03:32 , received 06:23:35
The status summary mail: generated 06:04:05, received 06:23:45, the header is 
looking like this:
 
Received: from BKKSALIVE002.bkk-mobiloil.de (10.96.65.5) by
bkkmail003.bkk-mobiloil.de (10.96.65.132) with Microsoft SMTP Server id
14.1.289.1; Thu, 22 Sep 2011 06:23:45 +0200
To: <[email protected]>
From: <[email protected]>
Subject: Servers Alive: down: 166 - up: 823 - maintenance: 60
Date: Thu, 22 Sep 2011 04:23:45 &#43;0000
Message-ID: <[email protected]>
X-Mailer: Woodstone Servers Alive version 6.3.2407
X-Priority: 2
X-Info: http://www.woodstone.nu/salive (http://www.woodstone.nu/salive)
X-WSSAID: 44540120110922.SA632407-1
MIME-Version: 1.0
Content-Type: text/plain
Return-Path: [email protected]
X-MS-Exchange-Organization-AuthSource: bkkmail003.bkk-mobiloil.de
X-MS-Exchange-Organization-AuthAs: Anonymous
X-MS-Exchange-Organization-AVStamp-Mailbox: MSFTFF;1;0;0 0 0
X-OLX-Disclaimer: Done
X-Auto-Response-Suppress: DR, OOF, AutoReply
 
 
Who is generating this delay? The mailserver admin says: it wasn&#8217;t me!
 
SA version is 6.3.2407, but in january we had the same effect on our old 
system, with 6.2.2279.3.
 
Mit freundlichen Grüßen
 
Ralf Minuth
Teamleitung Server/Anwendungen
 
Mobil
BETRIEBSKRANKENKASSE
Hühnerposten 2, 20097 Hamburg
www.bkk-mobil-oil.de (www.bkk-mobil-oil.de)
 
Telefon: 040 3002-60301
Telefax: 040 3002-960301
E-Mail:   [email protected] (mailto:[email protected])
 
 
Auch 2012 kein Zusatzbeitrag &#8211; jetzt Mitglieder werben und belohnt 
werden. Nähere Infos finden Sie hier: www.bkk-mobil-oil.de/mitgliederwerbung 
(http://www.bkk-mobil-oil.de/mitgliederwerbung)


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-- 
Best regards,
 Viktor                            mailto:[email protected] 
(mailto:[email protected])

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