Cisco Cisco Email Security Appliance X1070 Guía Para Resolver Problemas

Contributed by Chris Haag and Enrico Werner, Cisco TAC Engineers.
Jul 18, 2014

Can the ESA deliver SMTP traffic to a different port number other than 25?

Port 25 is the standard SMTP port mail exchange servers use to listen for incoming email messages. The ESA
can be configured to deliver mail to a specific host over an alternate port. The 

smtproutes

  command in the

CLI is the simplest way to configure this:

mail3.example.com> smtproutes

There are no routes configured.

Choose the operation you want to perform:

− NEW − Create a new route.

− IMPORT − Import new routes from a file.

[]> new

Enter the hostname for which you want to set up a permanent

route.

Partial hostnames such as ".example.com" are allowed.

Use "ALL" for the default route.

[]> testexchange.example.com

Enter the destination hosts, separated by commas, which you

want mail for

testexchange.ironport.com to be delivered.

Enter /dev/null by itself if you wish to discard the mail.

[]> exchange.example.com:1025

Mapping for testexchange.ironport.com to

exchange.example.com:1025 created.

There are currently 1 routes configured.

Choose the operation you want to perform:

− NEW − Create a new route.

− DELETE − Remove a route.

− PRINT − Display all routes.

− IMPORT − Import new routes from a file.

− EXPORT − Export all routes to a file.

− CLEAR − Remove all routes.