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Interface's Netmask query

Anshul Sinha
Level 1
Level 1

       Changing netmask of an interface to 255.255.255.255, will make the interface inactive? Can we still use that interface to for routing emails?

I using ESA C670 with AsyncOS 8.0.1

2 Replies 2

Robert Sherwin
Cisco Employee
Cisco Employee

Mail still routes --->

Snippet from 'showconfig' of the interface I chose to set w/ 255.255.255.255 mask:

  airbus_1

  10.2.3.4

  Data 1

  255.255.255.255

  airbus_1.test.com

Mail logs, showing accept and process --- domain "boom.com" is being routed to /dev/null --- but, still routes...

Thu Feb 13 02:03:18 2014 Info: New SMTP ICID 25 interface airbus_1 (10.2.3.4) address X.Y.Z.75 reverse dns host unknown verified no

Thu Feb 13 02:03:18 2014 Info: ICID 25 ACCEPT SG UNKNOWNLIST match sbrs[none] SBRS not enabled

Thu Feb 13 02:04:01 2014 Info: Start MID 20 ICID 25

Thu Feb 13 02:04:01 2014 Info: MID 20 ICID 25 From: <hi@there.com>

Thu Feb 13 02:04:13 2014 Info: MID 20 ICID 25 RID 0 To: <two@boom.com>

Thu Feb 13 02:04:22 2014 Info: MID 20 Subject 'yo yo yo '

Thu Feb 13 02:04:22 2014 Info: MID 20 ready 135 bytes from <hi@there.com>

Thu Feb 13 02:04:22 2014 Info: MID 20 matched all recipients for per-recipient policy DEFAULT in the inbound table

Thu Feb 13 02:04:22 2014 Info: MID 20 queued for delivery

Thu Feb 13 02:04:22 2014 Info: Delivery start DCID 0 MID 20 to RID [0]

Thu Feb 13 02:04:22 2014 Info: Message done DCID 0 MID 20 to RID [0]

Thu Feb 13 02:04:22 2014 Info: MID 20 RID [0] Response '/dev/null'

Thu Feb 13 02:04:22 2014 Info: Message finished MID 20 done

Hope this helps!

-Robert

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Thanks Robert.

The information was helpful. I will test it out in my QA env.