i found this log, is this my server be hack

[alvis168]

2008-12-22 17:09:55 Received from alvis168@168mn.com U=apache P=local S=1235 T="=?big5?B?d2VpYWltaW1pLLF6pm4st1DBwrF6qmClVaG4obmov7hnpNGvu7W3vNa26aG5obggLSCov7hnpNGxTcTdq+G0qbd8IEV"
2008-12-22 17:10:00 ija.com [208.73.210.50] Connection refused
2008-12-22 17:10:00 jiosadfj@ija.com R=lookuphost T=remote_smtp defer (111): Connection refused
2008-12-22 17:27:51 ija.com [208.73.210.50] Connection refused
2008-12-22 17:27:51 jiosadfj@ija.com R=lookuphost T=remote_smtp defer (111): Connection refused
2008-12-22 17:57:51 ija.com [208.73.210.50] Connection refused
2008-12-22 17:57:51 jiosadfj@ija.com R=lookuphost T=remote_smtp defer (111): Connection refused
2008-12-22 18:12:59 ija.com [208.73.210.50] Connection refused
2008-12-22 18:12:59 jiosadfj@ija.com R=lookuphost T=remote_smtp defer (111): Connection refused
2008-12-22 18:42:51 ija.com [208.73.210.50] Connection refused
2008-12-22 18:42:51 jiosadfj@ija.com R=lookuphost T=remote_smtp defer (111): Connection refused
2008-12-22 19:12:51 ija.com [208.73.210.50] Connection refused
2008-12-22 19:12:51 jiosadfj@ija.com R=lookuphost T=remote_smtp defer (111): Connection refused
2008-12-22 20:12:51 ija.com [208.73.210.50] Connection refused
2008-12-22 20:12:51 jiosadfj@ija.com R=lookuphost T=remote_smtp defer (111): Connection refused
2008-12-22 21:57:56 ija.com [208.73.210.50] Connection refused
2008-12-22 21:57:56 jiosadfj@ija.com R=lookuphost T=remote_smtp defer (111): Connection refused
2008-12-23 00:27:54 ija.com [208.73.210.50] Connection refused
2008-12-23 00:27:54 jiosadfj@ija.com R=lookuphost T=remote_smtp defer (111): Connection refused
2008-12-23 03:57:51 ija.com [208.73.210.50] Connection refused
2008-12-23 03:57:51 jiosadfj@ija.com R=lookuphost T=remote_smtp defer (111): Connection refused
2008-12-23 09:12:51 ija.com [208.73.210.50] Connection refused
2008-12-23 09:12:51 jiosadfj@ija.com R=lookuphost T=remote_smtp defer (111): Connection refused
2008-12-23 17:12:52 ija.com [208.73.210.50] Connection refused
2008-12-23 17:12:52 jiosadfj@ija.com R=lookuphost T=remote_smtp defer (111): Connection refused
2008-12-24 01:27:55 ija.com [208.73.210.50] Connection refused
2008-12-24 01:27:55 jiosadfj@ija.com R=lookuphost T=remote_smtp defer (111): Connection refused
2008-12-24 09:28:37 ija.com [208.73.210.50] Connection refused
2008-12-24 09:28:37 jiosadfj@ija.com R=lookuphost T=remote_smtp defer (111): Connection refused
2008-12-24 17:42:52 ija.com [208.73.210.50] Connection refused
2008-12-24 17:42:52 jiosadfj@ija.com R=lookuphost T=remote_smtp defer (111): Connection refused
2008-12-25 01:57:51 ija.com [208.73.210.50] Connection refused
2008-12-25 01:57:51 jiosadfj@ija.com R=lookuphost T=remote_smtp defer (111): Connection refused
2008-12-25 09:57:51 ija.com [208.73.210.50] Connection refused
2008-12-25 09:57:51 jiosadfj@ija.com R=lookuphost T=remote_smtp defer (111): Connection refused
2008-12-25 17:57:52 ija.com [208.73.210.50] Connection refused
2008-12-25 17:57:52 jiosadfj@ija.com R=lookuphost T=remote_smtp defer (111): Connection refused
2008-12-26 02:12:51 ija.com [208.73.210.50] Connection refused
2008-12-26 02:12:51 jiosadfj@ija.com R=lookuphost T=remote_smtp defer (111): Connection refused
2008-12-26 10:12:51 ija.com [208.73.210.50] Connection refused
2008-12-26 10:12:51 jiosadfj@ija.com R=lookuphost T=remote_smtp defer (111): Connection refused


i didnt send any email for this person

[alvis168]

ERROR (512): Smarty error: problem creating directory "./tmp/_cached_templates" (/var/www/html/webmail/smarty/Smarty.class.php:589)\

my webmail can't use

if i go to SquirrelMail
it will show this kind error
Error opening ../data/default_pref
Default preference file not found or not readable!
Please contact your system administrator and report this error.

[nobaloney]

You're going to have to find an experienced systems administrator to log in and look at your server.

Jeff