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30 Installing Symantec Mail Security for SMTP
Installing Symantec Mail Security for SMTP
Verifying and testing DNS settings
Your server must be configured as a DNS client before installing Symantec Mail
Security for SMTP.
Verify and test DNS settings
To verify DNS settings, you must check the TCP/IP properties for your server.
To test your DNS server, use the Name Server Lookup (NSLookup) utility.
To verify DNS settings on Windows 2000/2003 Server
1
Open Local Area Connection Properties.
2
Click Internet Protocol (TCP/IP).
3
Click Properties.
4
Click Advanced.
5
On the DNS tab, specify the domain suffix and verify that at least one valid
DNS server is listed in the DNS server addresses list.
The host name is the Computer name that is entered in System Properties
on the Network Identification tab.
Contact your administrator or Internet service provider (ISP) if you are
unsure of the values to use.
To verify DNS settings on Solaris
1
Open the following file:
/etc/resolv.conf
The file should contain lines similar to the following:
domain somewhere.com
nameserver 192.168.1.2
nameserver 192.168.9.7
Verify that the specific domain name and name server addresses are correct
for your site.
Contact your administrator or Internet service provider (ISP) if you are
unsure of the values to use.
2
Make any necessary changes.
If the /etc/resolv.conf file does not exist on your server, create it using the
example in step 1 as a template. Replace the domain name and name server
addresses with values that are correct for your site.
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