Cisco Cisco Email Security Appliance X1070 Guía Para Resolver Problemas

Contributed by Cisco TAC Engineers.
Nov 10, 2014

How can you redirect mail from one Cisco Email Security Appliance (ESA) to another ESA for delivery?

There are certain times when an ESA might need to be shutdown/rebooted, or, there is a need to transfer
NDRs, delayed messages, or messages in queue from one ESA to another ESA in order to attempt delivery.

For this example, when issuing the tophosts active_rcpts command on the CLI, we can see that ESA #1 is has
104 messages in queue for Cisco.com:

To force the queued messages waiting for delivery off the current ESA and to send those messages over to
another ESA to attempt delivery, please follow these steps:

First, to prevent ESA #1 from receiving any new messages, from the CLI on ESA #1, run
suspendlistener and select the inbound listener.

1. 

Log−in to the ESA #2 and add the IP address of the ESA #1 to a Relay Sender Group (Mail Policies >
HAT Overview > choose the relay Sender Group > Add Sender...). This will allow ESA #2 to treat
the IP of ESA #1 as an outgoing sender.

2. 

Next, to redirect the queued messages, from the CLI on ESA #1, run redirectrecipients. The
appliance will prompt you to enter in the hostname or IP address of the of the machine you want to
send all mail to.  This is the hostname or IP address of ESA #2:

(Machine myesa.local.1)> redirectrecipients

3.