Postfix

[frater]

For monitoring Postfix I took a look at this script, but I had to alter some of the things. It doesn't come with a template, so I created one...

http://www.zabbix.com/wiki/howto/mon...itoringpostfix

UserParameter=postfix.mailq,mailq | grep -v "Mail queue is empty" | grep -c '^[0-9A-Z]'

#!/bin/bash

MAILLOG=/var/log/mail.log
DAT1=/tmp/zabbix-postfix-offset.dat
DAT2=$(mktemp)
PFLOGSUMM=/usr/sbin/pflogsumm
ZABBIX_CONF=/etc/zabbix/zabbix_agentd.conf
DEBUG=1

function zsend {
  key="postfix[`echo "$1" | tr ' -' '_' | tr '[A-Z]' '[a-z]' | tr -cd [a-z_]`]"
  value=`grep -m 1 "$1" $DAT2 | awk '{print $1}'`
  [ ${DEBUG} -ne 0 ] && echo "Send key \"${key}\" with value \"${value}\"" >&2
  /usr/bin/zabbix_sender -c $ZABBIX_CONF -k "${key}" -o "${value}" 2>&1 >/dev/null
}

/usr/sbin/logtail -f$MAILLOG -o$DAT1 | $PFLOGSUMM -h 0 -u 0 --no_bounce_detail --no_deferral_detail --no_reject_detail --no_no_msg_size --no_smtpd_warnings > $DAT2

zsend received
zsend delivered
zsend forwarded
zsend deferred
zsend bounced
zsend rejected
zsend held
zsend discarded
zsend "reject warnings"
zsend "bytes received"
zsend "bytes delivered"
zsend senders
zsend recipients

rm $DAT2

[bnaranjo]

Postix template problem

hi frater, i wonder if you can help me, i use your template and your script, but im unable to get the statistics in zabbix server, i've checked the logs and i couldn´t find anything to solve the problem, however if i run the script in the postfix server i can actually see the statitics, but i dont know the sender is not sending them to the zabbix server,

first i had a problem running the agentd (i had an error “can not chdir(/var/spool/clientmqueue/): Permission denied. Program mode requires special privileges, e.g., root or TrustedUser.”) due to file permission but with a chmod -R 755 /var/spool/mqueue i'solved it, after i had an error that cannot create /tmp/zabbix-postfix-offset.dat same permissions issue, fixed after chmod -R 777 /tmp, im not very savy with linux centos, thats why i dont know what else to do to make this work.

please help!!

Thank you

[frater]

Does the other zabbix stuff work?
I mean, do you have an agent running on that machine and does it give you the other statistics?

I did notice that the normal agent still works even if the hostname you entered in /etc/zabbix/zabbix_agentd.conf does not match with the hostname in your zabbix-server,
When you use zabbix_sender it DOES need to match....

Check this first

[bnaranjo]

Monitoring Postfix

Hi Frater, i've just checked the hostname (FQDN) in the agentd and its exactly the same as wrote it in the server even with case sensitive, i get the other statistics without a problem i´ve just realized that even the postfix items show as ACTIVE in the item configuration like the would be working fine, i just dont kown why they dont get any value nor appear in the latest data tab or anywhere else.

there's is a way to monitor the zabbix sender or at least test it to see if its working???, by the way the item postfix.mailq just gives me the value of "0", all the time, i dont kown if this is correct..

thank u 4 ur help frater.

[bnaranjo]

Postfix Monitoring

i've forgot to tell you that postfix.mailq is the only item that i do see in the latest data tab, the others just dont show anywhere... thanks

[frater]

there's is a way to monitor the zabbix sender or at least test it to see if its working???, by the way the item postfix.mailq just gives me the value of "0", all the time, i dont kown if this is correct..

thank u 4 ur help frater.

It depends if your mailq is always empty or not...
I'm using it on ISP mailservers which sends hundreds of mails. I don't know how many mails stay in your queue.

Try to get an email in the queue which can't be delivered immediately..

You could replace mailq with /usr/bin/mailq
and maybe you need to add it to sudo with this line (first try the full path):

echo zabbix ALL = NOPASSWD: `which mailq` >> /etc/sudoers

[frater]

You needed to read the original link too....

Your system probably has these missing:

logtail
pflogsumm

apt-get install pflogsumm
apt-get install logtail

[bnaranjo]

Statistics seems fine in the server

Hi Frater, sorry that i didnt get back at you sooner, i was out of town giving support in a branch office,

i've already read the original link before i tried your script, and installed the other tools, that's why when i run the script with the zabbix user i get the statistics, as i attached them, i've also attached screenshots of logs in the zabbix server and postfix client, there are some errors of non supported items (due to the default linux template items), but nothing related to the postfix items, as you can see in the picture they seem ok in the config tab, but not showing info in the latest data tab. i tried the other command you told me /usr/bin/mailq and the queue is still 0, the volume of mails that i have is about 8000 per day (100k average)and i have a 1024mb uplink, i dont know if that is why i dont have mail in the queue.

thanks for your help, once again

[frater]

Versions > 1.8 of zabbix_sender will tell you if the server accepts the data you are providing.
I too had problems when I tried zabbix_sender for the first time.
The log of the zabbix server turned out to be useless, even when I set debug to high.

It's best to upgrade your sender if it's < 1.8

Use this line

/usr/bin/zabbix_sender -vv -c $ZABBIX_CONF -k "${key}" -o "${value}"

instead of

/usr/bin/zabbix_sender -c $ZABBIX_CONF -k "${key}" -o "${value}" 2>&1 >/dev/null

[bnaranjo]

Zabbix Senders not sending data

Hi frater, i did what you told me and now i know the problem is in the comunication between the zabbix_sender and the zabbix_server, do you know where i can find any log that can tell what is actually the issue, because the other statistics are working just fine so its not a network problem, nor a firewall problem, both machine are in the same subnet and see each other directly

i attached the screenshots that i've got with the change that you suggested me,

i remembered also that you told me that zabbix sender wont work if its not the same hostname in the agentd and in the server so i put this screenshots too.

thanks and i really appreciate your help from far far away.

[bnaranjo]

this post, looks very similar to my problem:

http://www.zabbix.com/forum/showthread.php?t=19608&highlight=zabbix+sender

they talk about especifiyng allowed hosts but i dont know where to do that if in the client or the server?...

do you think this is my problem??,

thx.

[bnaranjo]

Getting closer

Hi Frater, with the post that i told you i was able to get info in the zabbix server (i think), i attached the logs saying that i got the data, BUT in the frontend im still unable to watch the items.

am i correct?? am i getting the info in the zabbix server? or it is just ignoring it

thanks

[frater]

But how do you know it's not a firewall problem?

have you done a

telnet <server> 10051

[bnaranjo]

yeah, i got connected to the port without the problem, as i said in the above post i think i got the data in the server, but if i run the script manually i still got the same problem

[bnaranjo]

At Last!!!!

Hi frater, i really appreciated your help, without you i dont think i would got this working, what was left was that de NAME field (not only hostname), must also match the hostname, with these and the post that i told you i got it working

thanks very much !!!!