Routing Outgoing Emails

[MohammadHamad]

Hello,

I have a requirement where I have 5 internal domains which are sending emails to recipients on the internet. All the emails are now configured to go through my Cisco IronPort (ESA) appliance to a cloud security device, which then routes it to the destination.

For 3 of the domains, I want to change the policy to bypass the cloud device and have the IronPort send it directly to the destination.

Please let me know what would be the best configuration method here. Can it be achieved through an outgoing content filter and mail policy? Or the gateway needs to be changed? Or is not possible?

Thanks,

[Libin Varghese]

Hi Mohammad,

I would like to confirm how the emails are currently being routed to the cloud devices for the 5 internal domains sending emails outbound.

I would suggest using content filters to accomplish alternate routing for the 2 internal domains (which should be routed to cloud) and letting the other 3 internal domains use DNS to deliver emails.

Content Filter:
Condition -
Envelope Sender: Internal Domain1/Domain2

Action:
Send to Alternate Destination Host: IP for cloud device

With the above content filter in place if there are no specific SMTP routes defined, emails from the other 3 internal domains would use DNS to deliver emails directly to the destination over internet.

Thanks
Libin Varghese