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Configuring Fedora webserver to send emails
Posted on May 30th, 2009 No commentshave a server running Fedora 9 and I have installed and configured Apache using some tutorials on the web. I have installed Joomla and for the most part it is working correctly. However, when i send an email from the site through the Contact Us area, the email doesn’t send. I’m presuming its down to Fedora not being configured correctly to send emails.
I’d like to used a script for work on the server but it is crutial that it can send email from a hosted site.
First, check your logfiles for some additional info. There should be probably something in /var/log/maillog.
You can also check if you are able to send email from commandline:
echo “body of email” | mailx -s “subject” recipient’s@address
You can also check how are you trying to send emails from joomla - are you using mail() function, sendmail program, or SMTP? I don’t know where this setting is in joomla, but I’m sure, that there is such option. -
DNS Name servers tab
Posted on May 30th, 2009 No commentsunder DNS Name servers tab, how can you tell if those servers listed if they hold an AD integrated or Primary or secondary zone without logging on to them?
Thanks
You need to actually log into the server in order to run the DNS console and identify the types of zones on each DNS server. You cannot do it directly from the IP of the server alone.
Note that you could install the Adminpak tools (http://www.microsoft.com/downloads/details.aspx?familyid=e487f885-f0c7-436a-a392-25793a25bad7) to your computer, which would allow you to access the DNS console and remotely manage the DNS server without remotely logging into the server itself.
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Forwarding the webmail address to the internet
Posted on May 30th, 2009 No commentsHi All,
I have a local network domain name for a company that host their email outside the office, the issue is that the domain name they are using for the local network is the same as the domain for their emails, and sometimes they need to use the webmail address from inside the office, the problem is that when you request the webmail address it search for it in the local network and I need a way to let the browser go to the correct location on the internet, so what do you suggest would be a good soultion for that, i tried adding an A Host in the DNS but that doesn’t seem to work, and as the network has an MS ISA server, can we create an access rule for that?I think that if you specify in the host file the domain name (example: mail.domain.com) and map it to the external address then you should be fine.
It would be useless to use the host file to specify an internal address, because your dns is capable of resolving inside IP addresses and maybe this is a point that Roachy didnt understand very well
Dimitris -
Help with understanding lines from Named in syslog?
Posted on May 30th, 2009 No commentsUbuntu 9.4, Bind 9.4:
I’m asking for help to determine what these lines in my syslog file mean.This ip address is unknown to me. I interpret this line to mean that the client is trying to update (something) in mydomain.org and it’s being denied because the client isn’t known. I have serveral lines like this with different addresses.
A1. client 76.216.89.230#15102: update ‘mydomain.org/IN’ denied
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This ip address is known to me, it’s our Checkpoint linux firewall server. I interpret this line to mean that the client is trying to update (something) in mydomain.org and it’s being denied because the client doesnt’ have the right permission. I only have one line for this in syslog.A2. client xxx.xx.xx.xxx#26731: update ‘mydomain.org/IN’ denied
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This showed up after I enabled the option:
query-source address * port 53;
Do I need to be concerned about this one, or is this a general information msg?A3. /etc/bind/named.conf.options:14: using specific query-source port suppresses port randomization and can be insecure.
=============================================================================
I’m completely clueless on this one. Both addresses are unknown. What does this mean?A4. Apr 22 10:36:11 myDNSsvr named[21370]: dispatch 0xb5f803a8: shutting down due to TCP receive error: 208.109.255.17#53: connection reset
Apr 22 10:36:12 myDNSsvr named[21370]: dispatch 0xb5f803a8: shutting down due to TCP receive error: 216.69.185.17#53: connection reset
=============================================================================
What’s going here? Why would postfix connect and disconnect so many time like this?A5. Apr 22 09:54:02 myDNSsvr postfix/smtpd[21410]: connect from localhost[127.0.0.1]
Apr 22 09:54:02 myDNSsvr postfix/smtpd[21410]: disconnect from localhost[127.0.0.1]
Apr 22 09:57:02 myDNSsvr postfix/smtpd[21415]: connect from localhost[127.0.0.1]
Apr 22 09:57:02 myDNSsvr postfix/smtpd[21415]: disconnect from localhost[127.0.0.1]
Apr 22 10:00:02 myDNSsvr postfix/smtpd[21417]: connect from localhost[127.0.0.1]
Apr 22 10:00:02 myDNSsvr postfix/smtpd[21417]: disconnect from localhost[127.0.0.1]
Apr 22 10:03:02 myDNSsvr postfix/smtpd[21423]: connect from localhost[127.0.0.1]
Apr 22 10:03:02 myDNSsvr postfix/smtpd[21423]: disconnect from localhost[127.0.0.1]
Apr 22 10:06:02 myDNSsvr postfix/smtpd[21427]: connect from localhost[127.0.0.1]
Apr 22 10:06:02 myDNSsvr postfix/smtpd[21427]: disconnect from localhost[127.0.0.1]
Apr 22 10:09:02 myDNSsvr postfix/smtpd[21429]: connect from localhost[127.0.0.1]
Apr 22 10:09:02 myDNSsvr postfix/smtpd[21429]: disconnect from localhost[127.0.0.1]Thanks
A1. Because you dont’ have allow-update { 1.1.1.1; }; in your configuration, hence allowing updates to the reverse dns records it spits out this error. No big deal it can be ignored.
A2. See A1 with the addition of you can stop the updates with the checkpoint firewall if this isn’t your external DNS server and only used internally.
A3. DNS poisoning attacks, comment out the line “query-source port 53;” in /etc/bind/named.conf.options or remove it and restart named/bind9.
A4. Postfix - Check out postqueue taking a guess you have mail sitting in a queue that needs to be delivered, you can either delete the email or you can change postfix’s configuration to reject it instead of soft bouncing it.
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How do I make a computer with static IP address visible on network?
Posted on May 30th, 2009 No commentsMy Boss’s PC has recently become invisible on our Network. It is a Netware network using workgroups. His machine is running XP pro SP3. He can ping and see other systems out on the network but I can not ping his system or the see it in the list of systems on the network. He has a static IP address assigned to his machine,because of alert and the like that are sent to it each night. Also he has lost the ability to remote into his system form home. which he needs. He does NOT have the windows firewall enabled. We have tried reseting the IP stack that did not help. But the courious thing happen after we did that he got a dynamitly IP assigned which I was then able to see his system in the list of workgroup systems. When he assign the static IP again it disappeared. I don’t knowwhere to go from here any help would be appricated….
OK everyone that has be so kind to respond to my question, we have discovered the cause of my Boss’s PC invisiblity. He installed at Cisco VPN Client just before this happen. Once he uninstalled it, well you know what the answer is, he is back to normal. I not sure how to reward the points for all you help. any suggestions?




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