Microsoft
Software
Hardware
Network
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.
Random Solutions
namespace question
SBS 2008 reporting shows wrong amount of sent emails
Forest functional level issue when trying to install Exchange Server 2010
Powershell, get-qadcompter
HP Desktop memory
MailChimp WordPress Plugin Embedded styles display: none; hiding form, Part 2
Symantec Email Proxy
server room and rain
Event ID 333 - Server 2003 SP2 I/O Error
Exchange 2010 hardware recommendation