Registrar Barrier DNS List
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= DNS Lookup to Separate the domain part of a hostname = | = DNS Lookup to Separate the domain part of a hostname = | ||
| - | This DNS lookup helps you find the main domain part of a hostname. Sometimes it is called two level TLDs and three level TLDs. | + | This DNS lookup helps you find the main domain part of a hostname. Sometimes it is called two level TLDs and three level TLDs. Lookups are accomplished through DNS calls as follows: |
| + | |||
| + | dig perkel.com.rb.junkemailfilter.com - returns 127.0.0.1 | ||
| + | dig perkel.co.uk.rb.junkemailfilter.com - returns 127.0.0.2 | ||
| + | |||
| + | This is a service of [http://www.junkemailfilter.com Junk Email Filter] | ||
| + | |||
| + | == Exim Configuration == | ||
# Separates the domain part of a hostname - ftp.perkel.com returns perkel.com | # Separates the domain part of a hostname - ftp.perkel.com returns perkel.com | ||
Revision as of 16:06, 2 July 2007
DNS Lookup to Separate the domain part of a hostname
This DNS lookup helps you find the main domain part of a hostname. Sometimes it is called two level TLDs and three level TLDs. Lookups are accomplished through DNS calls as follows:
dig perkel.com.rb.junkemailfilter.com - returns 127.0.0.1 dig perkel.co.uk.rb.junkemailfilter.com - returns 127.0.0.2
This is a service of Junk Email Filter
Exim Configuration
# Separates the domain part of a hostname - ftp.perkel.com returns perkel.com
# DNS lookup returns 127.0.0.1 for single level domains
# DNS lookup returns 127.0.0.2 for two level domains
# DNS lookup returns 127.0.0.3 for three level domains
warn !condition = ${if eq{$sender_host_name}{}}
dnslists = rb.junkemailfilter.com/$sender_host_name
set acl_c_rb = $dnslist_value
warn condition = ${if eq{$acl_c_rb}{127.0.0.1}}
set acl_c_sender_host_domain = ${sg{$sender_host_name}{\N^.*\.(.*\..*)$\N}{\$1}}
add_header = X-Sender-Domain: $acl_c_sender_host_domain
warn condition = ${if eq{$acl_c_rb}{127.0.0.2}}
set acl_c_sender_host_domain = ${sg{$sender_host_name}{\N^.*\.(.*\..*\..*)$\N}{\$1}}
add_header = X-Sender-Domain: $acl_c_sender_host_domain
warn condition = ${if eq{$acl_c_rb}{127.0.0.3}}
set acl_c_sender_host_domain = ${sg{$sender_host_name}{\N^.*\.(.*\..*\..*\..*)$\N}{\$1}}
add_header = X-Sender-Domain: $acl_c_sender_host_domain
