how to force making reverse DNS lookup ?

[haneo]

I want to configure our sendmail server to not accept email from xxx@bogus.bogus

so i must tell sendmail to make a dns reverse lookup, to reject email from bogus sender. but i don't know how doing it.

What i must insert in the sendmail.cf

(I am using solaris8 with sendmail 8.9)

Thanks for all.

 

[Guest_imported]

Dear,
please refer to /etc/mail/access
add the following line to access file:
bogus.bogus reject, or
From: xxx@bogus.bogus reject, and
restart sendmail : #/etc/rc.d/init.d/sendmail restart

You not need edit sendmail.cf directly but only do step above

Herri
Networks Engineers&System administrator
Home : Jakarta, Indonesia