sendmail发邮件由www-data代发 google邮箱当作垃圾邮件 发邮件速度慢

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1.解决由www-data代发的问题

	修改/etc/php5/apachea/php.ini文件

	SMTP = weibo.yqting.com
	smtp_port = 25
	from = [email protected]
	sendmail_from = [email protected]
	sendmail_path = /usr/sbin/sendmail -t -i -f [email protected]

	修改完以后一定要重启apache。输入命令：service apache2 restart

2.解决当作垃圾邮件和发邮件速度慢的问题

	原来/etc/hosts是	

	127.0.0.1 localhost
	127.0.1.1   ubuntu

	因为sendmail监听的是127.0.0.1，但却无法确认主机名AY121122020321dce8544 (因为在服务器上HOSTNAME是AY121122020321dce8544)，所以发送邮件就非常慢了。那么我就把这个主机名同时也加到localhost后面，变成：

	修改/etc/hosts

	weibo.yqting.com localhost
	127.0.0.1 weibo.yqting.com localhost AY121122020321dce8544  (ubuntu把主机名添加到这行localhost后面，centos系统添加到上面一行localhost后面）   

	然后重启sendmail服务：service sendmail restart