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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.
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