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Sympa was working fine but suddenly it died and when I try to restart sympa I 
receive the following error:

Bad arg length for Socket::pack_sockaddr_in, length is 0, should be 4 at 
/usr/local/lib/perl5/5.8.3/sun4-solaris/Socket.pm line 373

Apache is working fine and the host name is also resolving correctly. Any 
help will be appreciated.

Thanks,
Tarun