We will try to use Barracuda Spam FW 300 to work with our Exchange 2010.
I have everything setup on the Barracuda spam FW and i think i know what to do on the exchange as well.
My steps to switch emails from Exchange to Barracuda:
Step 1: On Barracuda : Basic>Outbound>Relay using trusted IP> IP address of exchange server
Step 2: On Barracuda : Domain>Domain Manager> Added Exchange Domain
Step 3: On Cisco FW: Change Public IP pointed to Exchange server to Barracuda Device. (NAT)
Step 4: Create Send connector in Exchange to smarthost to Barracuda spam device.
Step 5: Disable existing send connectors (so we don't send out duplicates)
That should be all on my part. At least this is what i am told by Barracuda technical support.
1. I am already using Barracuda spam for out other Linux servers and in the Firewall there is already an entry for a public IP of our Linux server, which now points to Barracuda device.
Can i have multiple public IP addresses pointing to same internal device... i don't think it should be an issue, but nonetheless worth asking.
2. Our employees use OWA (https://mail.company.com/OWA) to check emails from home or mobile on their phone. OWA points to mx record of : mail.company.com which points to exchange server.......
If i change FW to point that record to barracuda, wont this break my OWA? Email will flow, but how will my employees access mail through OWA?
Please advise as soon as possible.