當寄信給hotmail時的問題!

/var/log/maillog出現的訊息

Aug 29 17:07:25 www postfix/smtp[9156]: 0B7BDF4290: to=<jia_er26@hotmail.com>, relay=mx2.hotmail.com[65.54.245.40], delay=17, status=bounced (host mx2.hotmail.com[65.54.245.40] said: 550 Command rejected for policy reasons. (in reply to MAIL FROM command))

找到一個提示 ref: http://forums.dnsstuff.com/tool/post/dnsstuff/vpost?id=1337183&trail=45#34

接著我在gateway上設定了
   iptables -t nat -I POSTROUTING -s 192.168.1.80 -p tcp --dport 25 -j SNAT --to-source 125.252.67.35

似乎ok，觀查ing...

但...
從一開始根本就是那家isp線路對hotmail的問題 >_<" (maybe, 因為我也沒得查)

不過後來把postfix換成sendmail後，被退信的情況，就沒了- -

補充，系統為 Ubuntu 5.10 "Breezy Badger"