Rewrite Recipient Domain

[michaelschlueter1]

Hi

I want to rewrite the recipients domain of incoming e-mails and forward them to an external host.

I've implemented an incoming content filter rule where some addresses (in a dictionary) have been forwarded to an alt-host (external host). that works fine, but we need to rewrite the recipients domain.

How can ironport handle this?

ESA C370 / AsyncOS 9.7

regards

Michael

[Libin Varghese]

Hi Michael,

You could use the domain map feature to accomplish this.

You can configure a “domain map” for listeners. For each listener you configure, you can construct a domain map table which rewrites the Envelope Recipient for each recipient in a message that matches a domain in the domain map table. This feature is similar to the sendmail “Domain Table” or Postfix “Virtual Table” feature. Only the Envelope Recipient is affected; the “To:” headers are not re-written by this feature.

This is configured from the command line of the appliance using commands in the below order

listenerconfig --> Edit --> Number of listener to edit -> domainmap -> new

Working of domainmap is available in the user guide below Page 25-28

http://www.cisco.com/c/dam/en/us/td/docs/security/esa/esa9-7/ESA_9-7_User_Guide.pdf

Thanks

Libin Varghese

[michaelschlueter1]

Hi Libin

Thank you for this hint.

Our case is sligthly different as we only have some addresses of a domain (i.e. 100 Addresses must be rewritten).

as I see domainmapping is only for the whole domain per listener.

we need something where we can manage all affected addresses in a list / dictionary or also via cli and these addresses should then be rewritten to the "new" domain.

do we have to use alias tables for that?

regards

michael

[Libin Varghese · Accepted solution]

Michael,

Yes, if you are looking to implement this just for some addresses of a domain the Alias table can be used for that.

Using command "aliasconfig".

Libin

[michaelschlueter1]

Great - that works for me. unfortunately it is not possible to handle it in the GUI to delegate simple tasks to operation.

regards

michael