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Network Troublshooting / Linux Servers Support / Unwanted IP Addr trying to send mails from my qmail server
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on: May 18, 2008, 09:00:31 AM
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Hello All,
I am using qmail server (qmailrocks.org). Now the problem is my SMTP is going down frequently. I allowed only my network in /etc/tcp.smtp but if i check in /var/qmail/qmail-smtp/current log file its showing me diffrent networks ips are trying to send mail from my server. I am using firewall and my server is behind a firewall and only smtp,pop,imap,http traffic is allowed.
I am confused because different IP Addrs trying to use my SMTP i am using spam and clam both r working well if i check /var/log/maillog
I want to alllow only my IPS to use the SMTP please help me regarding this issue.
Regards, VJ
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Network Troublshooting / Linux Proxy Server Support / Tomcat & mod_jk integration
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on: April 23, 2008, 02:07:30 AM
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Hello All,
I configure tomcat and its working fine on default port now i want to integrate it web server port. I have download mod_jk.1.2.26 connector from apache site. I have 3-4 web application in my webapps directory and currently i am able to access these application on tomcat's default port (http://192.168.x.x/8080/application dir). Now i want to access all these apps using simply putting(http://192.168.x.x/application dir) in my web browser so i will get the application.
I think mod_jk2 is good to setup but i am confused about mod_jk & mod_jk2 please if anyone know about this please tell me.
How i can do all this. please tell me step by step.
Thanks in advance
VJ
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Network Troublshooting / Linux Servers Support / Re: SMTP SERVICE GOING DOWN:possible SYN flooding on port 25.Sending Cookies
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on: April 08, 2008, 01:54:53 AM
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Hi Ricky&Gaurav
I installed & configure qmail on Redhat As and its working fine. Thanks for your help. Now issue is my mail server is behind a firewall and i also added open relay for my network but if is see /var/log/qmail/qmail-send/current it shows me a different network ips trying to use my smtp but they can't. I want to totally stop this other network's ip so what i can do? I need any special security to do on my server.
Please help me regarding this.
Thanks in advance Vj
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Network Troublshooting / Linux Servers Support / SMTP SERVICE GOING DOWN:possible SYN flooding on port 25.Sending Cookies
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on: March 14, 2008, 12:10:02 AM
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Hello
I have configured a new qmail server and all services are working good. After some time i found that SMTP services is frequently going down if i check qmail stat it showing a big queue more than 20000. I tried to send mail from my server to gmail is not going but i can receive mail from Gmail.
I checked in log file it showing me a following error.
Mar 14 02:52:10 vjmail kernel: possible SYN flooding on port 25. Sending cookies. Mar 14 02:56:39 vjmail kernel: possible SYN flooding on port 25. Sending cookies.
I am not able to send any mail.
Thanks in advance
Thanks
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Network Troublshooting / Linux Servers Support / Script to change password of smbuser from windows
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on: January 06, 2008, 04:53:11 AM
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Hello All,
I have configured Samba for my domain and its working fine. I want to give change password permission to all the samba user by using web browser any user can change their smbpasswd.
I have assigned the following to each user useradd -d /dev/null -s /bin/false user name
So user dont have login shell they can only use their dir. I just want this for samba only not for system account.
If any one did this before please
Thanks in Advance
VJ
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Network Troublshooting / Linux Servers Support / How to change squirellmail login page
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on: December 25, 2007, 06:43:54 AM
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Hello ALL, Ricky&Gaurav
"Wish you a Marry Cristmas & Happy New Year"
I am using squirellmail for my qmail server and i have created my own login page for that.
but squirellmail is using login.php i want to put my login page on the server means i dont want squirellmail default login page.
How to do this i am not a programer please tell me i any one did this before.
Regards VJ
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