send mail 总是提示错误:Diagnostic-Code: SMTP; 550 Host unknown

qingcaimaomao
send mail 总是提示错误:Diagnostic-Code: SMTP; 550 Host unknown

我的命令是:
mail "test" [email]aaa@yahoo.com[/email]</psapp/aaa.sh
但是总是发不出去,错误是
(reason: 550 Host unknown)

大家快给建议,谢谢

[[i] 本帖最后由 qingcaimaomao 于 2007-3-13 14:20 编辑 [/i]]

nimysun
telnet ip smtpport
试试
helo
mail from: [email]xxxxxxx@xxxxxxxxx.xxx[/email]
rcpt to:  [email]yyyyy@yyyyy.xxx[/email]
data
xxxxxxxxxxx
.

有些网站可能需要smtp验证,如果这样就不好玩鸟~~