Cisco Cisco Email Security Appliance C190 Technical References

Cisco AsyncOS 9.1 for Email CLI Reference Guide

Chapter 3 The Commands: Reference Examples

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[]> first-hop

Enter the IP address of the incoming relay. IPv4 and IPv6 addresses are supported.

For IPv4, CIDR format subnets such as 10.1.1.0/24, IP address ranges such as 10.1.1.10-20,

and subnets such as 10.2.3. are allowed.

For IPv6, CIDR format subnets such as 2001:db8::/32 and IP address ranges such as

2001:db8::1-2001:db8::11 are allowed.

Hostnames such as crm.example.com and partial hostnames such as .example.com are allowed.

[]> 192.168.1.1

Do you want to use the "Received:" header or a custom header to determine the originating

IP address?

1. Use "Received:" header

2. Use a custom header

[1]> 1

Within the "Received:" header, enter the special character or string after which to begin

parsing for the originating IP address:

[from]> [

Within the headers, enter the position of the "Received:" header that contains the

originating IP address:

[1]> 1

There is 1 relay defined.

Choose the operation you want to perform:

- NEW - Create a new entry

- EDIT - Modify an entry

- DELETE - Remove an entry

- PRINT - Display the table

[]> print

Incoming Header Match

relay name: IP address: to parse: after: Hops:

----------- ----------- --------- ------ -----

first-hop 192.168.1.1 Received [ 1