邮件发送不成功，查看log，Dec 5 16:44:28 intranet sendmail[9891]: qB58iSe0009891: to= hello@139.com, ctladdr=root (0/0), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30039, relay=[127.0.0.1] [127.0.0.1], dsn=4.0.0, stat=Deferred: Connection ref
1.mail 命令发邮件
echo "bbbbbbbb"|mail -s "aaaaa" hello@139.com
2.发送不成功，查看log
Dec 5 16:44:28 intranet sendmail[9891]: qB58iSe0009891: to= hello@139.com, ctladdr=root (0/0), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30039, relay=[127.0.0.1] [127.0.0.1], dsn=4.0.0, stat=Deferred: Connection refused by [127.0.0.1]
此信息说明是被自己给拒绝了，主要原因是hostname和hosts文件配置不一样造成的，请保证配置正确：如下
cat /etc/hosts
127.0.0.1 localhost.localdomain localhost
cat /etc/sysconfig/network
HOSTNAME=localhost.localdomain
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