Question : Need to lock down SMTP traffic - Urgent!

Hi Experts, sorry to spring an urgent request on you. We've had an Admin guy make changes to our ASA firewall & we are accepting SMTP traffic from anywhere rather than Messagelabs (our mail scanners).

ML's have suspended outbound mail until I lock down SMTP traffic so, I need to configure my ASA to allow SMTP traffic in from the following IP range only:

216.82.240.0  255.255.240.0  /20  216.82.240.0 - 216.82.255.255
67.219.240.0  255.255.240.0  /20  67.219.240.0 - 67.219.255.255
85.158.136.0  255.255.248.0  /21  85.158.136.0 - 85.158.143.255
95.131.104.0  255.255.248.0  /21  95.131.104.0 - 95.131.111.255
117.120.16.0  255.255.248.0  /21  117.120.16.0 - 117.120.23.255
193.109.254.0  255.255.254.0  /23  193.109.254.0 - 193.109.255.255
194.106.220.0  255.255.254.0  /23  194.106.220.0 - 194.106.221.255
195.245.230.0  255.255.254.0  /23  195.245.230.0 - 195.245.231.255

Could you let me know the syntax please?

Many thanks in advance.

Answer : Need to lock down SMTP traffic - Urgent!

hi,

show ip access-list and see the current running enties , may be the entry for line  12 is not matching.