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Operating Systems Linux Red Hat Mail Problem. Maybe, it is a DNS Problem! Post 302335481 by nitin on Sunday 19th of July 2009 04:01:38 PM
Old 07-19-2009
Wow! You are using really old OS Smilie. If it's DNS issue, then there are two thing you will have to look in to:
Code:
/etc/resolv.conf

Make sure that your search domains and name servers are correctly entered.

Next look in to Iptables rules. Check to see if something is being blocked e.g. traffic to DNS server or DNS all together. I'd suggest you to post your rules here.

-Nitin Smilie
 

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avahi-dnsconfd.action(8)				      System Manager's Manual					  avahi-dnsconfd.action(8)

NAME
avahi-dnsconfd.action - avahi-dnsconfd action script SYNOPSIS
/etc/avahi/avahi-dnsconfd.action DESCRIPTION
avahi-dnsconfd.action is the action script that is called whenever a new unicast DNS server is found or removed by avahi-dnsconfd. The default script as shipped with avahi patches /etc/resolv.conf to reflect the changed unicast DNS server configuration. PARAMETERS
argv[1] Contains the character "+" if the DNS server is new, "-" when it shall be removed from the DNS server list. argv[2] The IP address of the DNS server. argv[3] Numerical network interface number this DNS server was found on. argv[4] Numerical protocol number this DNS server was found on. (usually 2 for IPv4 and 10 for IPv6) ENVIRONMENT
AVAHI_INTERFACE Contains the textual interface name the corresponds with argv[3]. (e.g. "eth0") AVAHI_INTERFACE_DNS_SERVERS Contains a list of all DNS servers that avahi-dnsconfd found on the interface $AVAHI_INTERFACE, separated by spaces. AVAHI_DNS_SERVERS Contains a list of all DNS server that avahi-dnsconfd found on all interfaces, separated by spaces. AUTHORS
The Avahi Developers <avahi (at) lists (dot) freedesktop (dot) org>; Avahi is available from http://avahi.org/ SEE ALSO
avahi-dnsconfd(8), avahi-daemon(8) COMMENTS
This man page was written using xml2man(1) by Oliver Kurth. Manuals User avahi-dnsconfd.action(8)
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