dns domain-lookup <interface name>

[AnjaliRawat0713]

Can I ask about the command 'dns domain-lookup <interface name>'
it looks like a global command...this won't affect our own DNS internal systems for anything else will it...it will only come
into use if using the firewall for DNS lookup for the three FQDN's provided in the configuration.
I just want to make sure it wont affect DNS for any users other than the three FQDN's configured on the firewall. 

[bhargavdesai]

The command is used for the Cisco ASA local DNS lookup. Like if you ping from ASA's console to any domain, it uses the internally configured DNS to resolve the ip address. For more reference visit
https://www.cisco.com/c/en/us/td/docs/security/asa/asa-command-reference/A-H/cmdref1/d3.html#pgfId-2044521

HTH
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[AnjaliRawat0713]

bhargavdesai Thank you for quick response. 

[Jaderson Pessoa]

it is used internally, not for ther users on your environment.

[AnjaliRawat0713]

Jaderson Pessoa Thank you for the response.
The DNS server IP to be configured in the ASA is same as configured in the client machine which is a.b.c.d .

[Jaderson Pessoa]

Well, in this case, if you change it and your ASA cannot translate the ip address your final users cannot neither.

Regards,

[AnjaliRawat0713]

Jaderson Pessoa ..okay thank you