Multiple Outgoing Mail

[yohanisferdi]

Hi All,

Here i want to ask for cisco esa ironport. From the attached image is shown for outgoing email flow, and from mail server/exchange send to MTA A and forward the outgoing email to MTA B then released to the internet. Is there any possible way to make a split outgoing mail on MTA A so we can separate specific outgoing mail to MTA B, and the rest/other mail are send trough the internet from MTA A ?

Please give the advice for the configuration or possible scenario on MTA A.

Thank you.

[Ken Stieers]

Are MTA A and MTA B Ironport ESAs? Or is the box its coming from the ESA?

[yohanisferdi]

Hi Ken,

Yes both of MTA are using ESA ironport and need to configure on ESA A. Is there only using mail relay to separate outgoing mail like needed?

[Ken Stieers]

Well to start, you could do this on the exchange server. Create another outgoing send connector and set the scope to the domains that need to go to B and set the next hop as B



If you want to send everything to A, and have it send some to B:
1. On B, add the IPs on A to the relaylist sendergroup for the private listener
2. On A: create an Outgoing content filter with an action that sets the Alternate Destination Host to the ip of the private listener on B.
3. On A: create a outgoing mail policy, with the recipients set to the domains you want send to B
4. On B: Configure the policy you created to use the content filter. If you're doing content and virus scanning on B, you may want to disable It on A so you minimize the load on it.

[yohanisferdi]

Hi Mr/Mrs. Ken,

Thankyou for the advice, gonna makesure for the first requirement. Is should to make the exchange server to have 2 connector? Because from our exchange server can only have one connector to MTA A for outgoing mail. We assume ironport can separate if we added new interface/IPs direct to public for some outgoing email, and the rest to MTA B. Please correct our requirement if it wrong.