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Replacing PIX with Cisco ASA 5505 issues

We replaced an extremely old PIX with an ASA 5505. We duplicated the old config on the new ASA (when possible) but still having a couple issues. The biggest one is that the old PIX had a rule that assigned an additional wan ip address to the outside interface.

global (outside) 1 74.x.x.12

I don't think the ASA is using that line (if at all) the way the pix did because we are having issues with some outbound email bouncing back due to our SPF record. The SPF record is set to 74.x.x.12 but when I telnet into other mail servers, they are seeing me come from 74.x.x.10 which is the IP assigned to the outside interface 0/0 of the ASA.

Any ideas how to resolve this besides changing the SPF record?

kdearing

Need to create a static NAT rule for your email server and 74.x.x.12

amkbailey

ASKER

Here was the existing NAT rule.

access-list acl_inbound permit tcp any host 74.x.x.11 eq smtp

I added
access-list acl_inbound permit tcp any host 74.x.x.12 eq smtp

but when I telent into other mail servers, it is seeing my ip in the greeting as 74.x.x.10

ASKER CERTIFIED SOLUTION

kdearing

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amkbailey

ASKER

8.2 (1)

nat (inside,outside) tcp 74.x.x.11 smtp 10.x.x.113 smtp netmask

SOLUTION