LinuxQuestions.org - sendmail problem. cpu usage very high! have log to see!

Apr 21 10:24:04 excellence sendmail[13989]: alias database /etc/aliases rebuilt by hong
Apr 21 10:24:04 excellence sendmail[13989]: /etc/aliases: 14 aliases, longest 10 bytes, 152 bytes total
Apr 21 10:24:05 excellence sendmail[14002]: starting daemon (8.12.11): SMTP+queueing@01:00:00
Apr 21 10:24:09 excellence sm-msp-queue[14025]: starting daemon (8.12.11): queueing@01:00:00
Apr 21 10:24:10 excellence sm-msp-queue[14026]: grew WorkList for /var/spool/clientmqueue to 2000
Apr 21 10:24:11 excellence sm-msp-queue[14026]: grew WorkList for /var/spool/clientmqueue to 3000
Apr 21 10:24:12 excellence sm-msp-queue[14026]: grew WorkList for /var/spool/clientmqueue to 4000
Apr 21 10:24:15 excellence sm-msp-queue[14026]: grew WorkList for /var/spool/clientmqueue to 5000
Apr 21 10:24:18 excellence sm-msp-queue[14026]: grew WorkList for /var/spool/clientmqueue to 6000
Apr 21 10:24:20 excellence sm-msp-queue[14026]: grew WorkList for /var/spool/clientmqueue to 7000
Apr 21 10:24:21 excellence sm-msp-queue[14026]: grew WorkList for /var/spool/clientmqueue to 8000
Apr 21 10:24:23 excellence sm-msp-queue[14026]: l3L2El1c012427: to=apache, delay=00:06:12, xdelay=00:00:02, mailer=relay, pri=122555, relay=localhost.homelinux.com. [208.67.219.130], dsn=4.0.0, stat=Deferred: Connection refused by localhost.homelinux.com.
Apr 21 10:24:26 excellence sm-msp-queue[14026]: l3L2El1d012427: to=apache, delay=00:06:10, xdelay=00:00:00, mailer=relay, pri=122555, relay=localhost.homelinux.com., dsn=4.0.0, stat=Deferred: Connection refused by localhost.homelinux.com.
Apr 21 10:24:27 excellence sm-msp-queue[14026]: l3L2El1e012427: to=apache, delay=00:06:03, xdelay=00:00:00, mailer=relay, pri=122555, relay=localhost.homelinux.com., dsn=4.0.0, stat=Deferred: Connection refused by localhost.homelinux.com.
Apr 21 10:24:28 excellence sm-msp-queue[14026]: l3L2El1f012427: to=apache, delay=00:05:58, xdelay=00:00:00, mailer=relay, pri=122555, relay=localhost.homelinux.com., dsn=4.0.0, stat=Deferred: Connection refused by localhost.homelinux.com.
Apr 21 10:24:29 excellence sm-msp-queue[14026]: l3L2El1g012427: to=apache, delay=00:05:56, xdelay=00:00:00, mailer=relay, pri=122555, relay=localhost.homelinux.com., dsn=4.0.0, stat=Deferred: Connection refused by localhost.homelinux.com.
Apr 21 10:24:30 excellence sm-msp-queue[14026]: l3L2El1h012427: to=apache, delay=00:05:52, xdelay=00:00:00, mailer=relay, pri=122555, relay=localhost.homelinux.com., dsn=4.0.0, stat=Deferred: Connection refused by localhost.homelinux.com.
Apr 21 10:24:31 excellence sm-msp-queue[14026]: l3L2El1i012427: to=apache, delay=00:05:43, xdelay=00:00:00, mailer=relay, pri=122555, relay=localhost.homelinux.com., dsn=4.0.0, stat=Deferred: Connection refused by localhost.homelinux.com.
Apr 21 10:24:35 excellence sm-msp-queue[14026]: l3L2El1j012427: to=apache, delay=00:05:41, xdelay=00:00:00, mailer=relay, pri=122559, relay=localhost.homelinux.com., dsn=4.0.0, stat=Deferred: Connection refused by localhost.homelinux.com.
Apr 21 10:24:37 excellence sm-msp-queue[14026]: l3L2El1k012427: to=apache, delay=00:05:38, xdelay=00:00:00, mailer=relay, pri=122583, relay=localhost.homelinux.com., dsn=4.0.0, stat=Deferred: Connection refused by localhost.homelinux.com.
Apr 21 10:24:38 excellence sm-msp-queue[14026]: l3L2El1l012427: to=apache, delay=00:05:26, xdelay=00:00:00, mailer=relay, pri=122583, relay=localhost.homelinux.com., dsn=4.0.0, stat=Deferred: Connection refused by localhost.homelinux.com.
Apr 21 10:24:38 excellence sm-msp-queue[14026]: l3L2El1m012427: to=apache, delay=00:05:15, xdelay=00:00:00, mailer=relay, pri=122583, relay=localhost.homelinux.com., dsn=4.0.0, stat=Deferred: Connection refused by localhost.homelinux.com.
Apr 21 10:24:40 excellence sm-msp-queue[14026]: l3L2El1n012427: to=apache, delay=00:05:08, xdelay=00:00:00, mailer=relay, pri=122583, relay=localhost.homelinux.com., dsn=4.0.0, stat=Deferred: Connection refused by localhost.homelinux.com.
Apr 21 10:24:41 excellence sm-msp-queue[14026]: l3L2El1o012427: to=apache, delay=00:05:01, xdelay=00:00:00, mailer=relay, pri=122583, relay=localhost.homelinux.com., dsn=4.0.0, stat=Deferred: Connection refused by localhost.homelinux.com.
Apr 21 10:24:41 excellence sm-msp-queue[14026]: l3L2El1p012427: to=apache, delay=00:04:54, xdelay=00:00:00, mailer=relay, pri=122583, relay=localhost.homelinux.com., dsn=4.0.0, stat=Deferred: Connection refused by localhost.homelinux.com.
Apr 21 10:24:47 excellence sm-msp-queue[14026]: l3L1NJB0005306: to=pdqevi@163.com, ctladdr=apache (74/74), delay=01:01:28, xdelay=00:00:00, mailer=relay, pri=211241, relay=localhost.homelinux.com., dsn=4.0.0, stat=Deferred: Connection refused by localhost.homelinux.com.
Apr 21 10:24:49 excellence sm-msp-queue[14026]: l3L1QA5Z005625: to=lptglp@163.com, ctladdr=apache (74/74), delay=00:58:38, xdelay=00:00:00, mailer=relay, pri=211241, relay=localhost.homelinux.com., dsn=4.0.0, stat=Deferred: Connection refused by localhost.homelinux.com.
Apr 21 10:24:51 excellence sm-msp-queue[14026]: l3L1YZ3U006669: to=cnutzf@163.com, ctladdr=apache (74/74), delay=00:50:16, xdelay=00:00:00, mailer=relay, pri=211241, relay=localhost.homelinux.com., dsn=4.0.0, stat=Deferred: Connection refused by localhost.homelinux.com.
Apr 21 10:24:53 excellence sm-msp-queue[14026]: l3L1hmZw007920: to=frdftf@163.com, ctladdr=apache (74/74), delay=00:41:05, xdelay=00:00:00, mailer=relay, pri=211241, relay=localhost.homelinux.com., dsn=4.0.0, stat=Deferred: Connection refused by localhost.homelinux.com.
Apr 21 10:24:55 excellence sm-msp-queue[14026]: l3L1mhg7008667: to=mvfzjs@163.com, ctladdr=apache (74/74), delay=00:36:11, xdelay=00:00:00, mailer=relay, pri=211241, relay=localhost.homelinux.com., dsn=4.0.0, stat=Deferred: Connection refused by localhost.homelinux.com.
Apr 21 10:24:57 excellence sm-msp-queue[14026]: l3L23xHk010663: to=yphrki@163.com, ctladdr=apache (74/74), delay=00:20:58, xdelay=00:00:00, mailer=relay, pri=211245, relay=localhost.homelinux.com., dsn=4.0.0, stat=Deferred: Connection refused by localhost.homelinux.com.
Apr 21 10:24:57 excellence sm-msp-queue[14026]: l3L1RTlF005820: to=hqzxgp@163.com, ctladdr=apache (74/74), delay=00:57:28, xdelay=00:00:00, mailer=relay, pri=211269, relay=localhost.homelinux.com., dsn=4.0.0, stat=Deferred: Connection refused by localhost.homelinux.com.
Apr 21 10:24:58 excellence sm-msp-queue[14026]: l3L1jCIE008091: to=bjtudk@163.com, ctladdr=apache (74/74), delay=00:39:44, xdelay=00:00:00, mailer=relay, pri=211269, relay=localhost.homelinux.com., dsn=4.0.0, stat=Deferred: Connection refused by localhost.homelinux.com.
Apr 21 10:24:59 excellence sm-msp-queue[14026]: l3L1nE5b008740: to=kjozbc@163.com, ctladdr=apache (74/74), delay=00:35:44, xdelay=00:00:00, mailer=relay, pri=211269, relay=localhost.homelinux.com., dsn=4.0.0, stat=Deferred: Connection refused by localhost.homelinux.com.
Apr 21 10:25:00 excellence sm-msp-queue[14026]: l3L1oMD8008882: to=jerfcr@163.com, ctladdr=apache (74/74), delay=00:34:37, xdelay=00:00:00, mailer=relay, pri=211269, relay=localhost.homelinux.com., dsn=4.0.0, stat=Deferred: Connection refused by localhost.homelinux.com.
Apr 21 10:25:03 excellence sm-msp-queue[14026]: l3L1pDQu009052: to=gkphlq@163.com, ctladdr=apache (74/74), delay=00:33:48, xdelay=00:00:00, mailer=relay, pri=211269, relay=localhost.homelinux.com., dsn=4.0.0, stat=Deferred: Connection refused by localhost.homelinux.com.
Apr 21 10:25:05 excellence sm-msp-queue[14026]: l3L29vbR011506: to==?big5?B?cTk5OTk5OTk5OTg5?= <q99999999989@yahoo.com.tw>, ctladdr=apache (74/74), delay=00:15:06, xdelay=00:00:00, mailer=relay, pri=211797, relay=localhost.homelinux.com., dsn=4.0.0, stat=Deferred: Connection refused by localhost.homelinux.com.

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does anyone know why ?
i have no tough it for long time, but recently, i found my cpu usage very high so that i check it ,found that sendmail problem... now i can't send mail by using php. thz for everyone!