UNIX for Advanced & Expert Users

Dear All ,
Still am facing many real problems with spam and spammers !!
i installed new linux machine , red hat 9 , and i checked sendmail.cf and i found nothing related to spam filters .

what should i do with linux red hat 9 in order to stop spammers from sending to my users ???

also i have a 2 questions please :

1. how can i sort directory files by size ?? or by date ? i mean if i ls the directory files , i need them to be sorted by size or date .

2. what is the best and easy command to use in order to know lateast files edited or modified or created or deleted on my system ?? how can i control or monitor this thing


thanks

Hi,

Try spamassassin ( http://www.spamassassin.org ) or DSPAM ( http://www.nuclearelephant.com/projects/dspam/ ). I use spamassassin and I'm VERY satisfied with it's results...

About the second question, que best command for that is find... do man find.

Good luck !