Solved

Monitoring tools are not monitoring smtp

Posted on 2008-06-20
8
305 Views
Last Modified: 2013-11-30
I have a weird problem which is not monitoring smtp service that is running on linux box.

The problem is if i configure any monitoring tools like sitescope and any free websites like...http://mon.itor.us/

is showing smtp is failed even it is running in the Linux box ..

what will it be the problem? Please assist me
0
Comment
Question by:jaisonshereen
  • 4
  • 3
8 Comments
 
LVL 10

Expert Comment

by:PeturIngiEgilsson
ID: 21831745
A firewall?
0
 

Author Comment

by:jaisonshereen
ID: 21831794
yes..but my firewall configuration seems like it is accepting smtp port 25 .
Please verify from your side:

[root@Server01 sysconfig]# cat iptables
# Firewall configuration written by system-config-securitylevel
# Manual customization of this file is not recommended.
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
:RH-Firewall-1-INPUT - [0:0]
-A INPUT -j RH-Firewall-1-INPUT
-A FORWARD -j RH-Firewall-1-INPUT
-A RH-Firewall-1-INPUT -i lo -j ACCEPT
-A RH-Firewall-1-INPUT -p icmp --icmp-type any -j ACCEPT
-A RH-Firewall-1-INPUT -p 50 -j ACCEPT
-A RH-Firewall-1-INPUT -p 51 -j ACCEPT
-A RH-Firewall-1-INPUT -p udp --dport 5353 -d 224.xx.0.xx -j ACCEPT
-A RH-Firewall-1-INPUT -p udp -m udp --dport 631 -j ACCEPT
-A RH-Firewall-1-INPUT -p tcp -m tcp --dport 631 -j ACCEPT
-A RH-Firewall-1-INPUT -p tcp -m tcp --dport 25 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
#-A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited
COMMIT
[root@Server01 sysconfig]#
0
 
LVL 10

Expert Comment

by:PeturIngiEgilsson
ID: 21831826
I would think the reject rule has to come before the accept rules ? ..
0
 
LVL 10

Expert Comment

by:PeturIngiEgilsson
ID: 21831846
Sorry i was wrong.
0
Backup Your Microsoft Windows Server®

Backup all your Microsoft Windows Server – on-premises, in remote locations, in private and hybrid clouds. Your entire Windows Server will be backed up in one easy step with patented, block-level disk imaging. We achieve RTOs (recovery time objectives) as low as 15 seconds.

 
LVL 10

Accepted Solution

by:
PeturIngiEgilsson earned 250 total points
ID: 21831910
Does your box have a public ip or is it behing a NAT?
0
 

Author Comment

by:jaisonshereen
ID: 21831943
yes my box having public ip. That is what i put for monitoring.
I dont know about NAT
0
 
LVL 7

Assisted Solution

by:dineesh
dineesh earned 250 total points
ID: 21837375
hi,

do you have an idea on how the http://mon.itor.us/ is testing your server.

if you have another linux box try nmap <public ip> and if the monitoring site is doing a ping test, then ICMP must be enabled.

alternatly you can stop the firwall for 10 mins and then test, then you will know if its the firewall or anyother issue.

do remember to activate the firewall after  the test.

0
 

Author Comment

by:jaisonshereen
ID: 21838302
i took another linux system . stop iptables and checked the smtp settings in monitoting tool.
Its getting same error !!
0

Featured Post

Complete VMware vSphere® ESX(i) & Hyper-V Backup

Capture your entire system, including the host, with patented disk imaging integrated with VMware VADP / Microsoft VSS and RCT. RTOs is as low as 15 seconds with Acronis Active Restore™. You can enjoy unlimited P2V/V2V migrations from any source (even from a different hypervisor)

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
VMWare 6 crashing 14 97
Linux  Script File Attributes 5 52
Python variable _ manually assigned 9 63
CentOS/RHEL 7 Linux maillog worldwide readable 2 40
Linux users are sometimes dumbfounded by the severe lack of documentation on a topic. Sometimes, the documentation is copious, but other times, you end up with some obscure "it varies depending on your distribution" over and over when searching for …
Fine Tune your automatic Updates for Ubuntu / Debian
Learn how to find files with the shell using the find and locate commands. Use locate to find a needle in a haystack.: With locate, check if the file still exists.: Use find to get the actual location of the file.:
This video shows how to set up a shell script to accept a positional parameter when called, pass that to a SQL script, accept the output from the statement back and then manipulate it in the Shell.

914 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

18 Experts available now in Live!

Get 1:1 Help Now