Registrar Barrier DNS List
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== Exim Configuration == | == Exim Configuration == | ||
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| + | If you are running [http://www.exim.org Exim] you can use this as follows: | ||
# 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 16:41, 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
If you are running Exim you can use this as follows:
# 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
