SMTP relay setup in Exchange 2010 with Barracuda smarthost

Dear Experts,

We have right now 4 email servers that are working with a Barracuda smart host. However, two of them need to be shutdown, they are the old servers. The problem I have now is that outgoing emails depend on the two old servers for the SMTP traffic. How do I make it so the two email servers that exit to the internet through a smart host Barracuda work with one another.

Here is how it shows in the Barracuda log:

Source IP:      is-xx-ms01.is.ad[172.xx.xx.12]

Source IP:      is-yy-ms01.is.ad[172.yy.yy100.221]

Those are the old servers relay SMTP traffic.  In the Barracuda device I am all set with the server entries. The two old servers don't have mailboxes anymore. I need the two Exchange 2010 to work without the two old servers.


Regards, M
marceloNYCMiddle-Tier AdministratorAsked:
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suriyaehnopConnect With a Mentor Commented:
Create/Modify a send connector.

1. On Address space name put *
2. Network tab | Route mail to folowing smart host > put the FQDN/IP Address for Barracuda
3. Source server put another two servers
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Andrew DavisConnect With a Mentor ManagerCommented:
ok. without knoowing your network setup, lets assume

exchange-server1.domain.local      172.xx.xx.12
exchange-server2.domain.local      172.xx.xx.13
exchange-server3.domain.local      172.xx.xx.14
exchange-server4.domain.local      172.xx.xx.15
Baracuda-device      172.xx.xx.10

assume that we want to remove server1 and server2.
First you need to ensure that the barracuda accepts messages and relays for server3 and server4.
for these seetings please see https://www.barracudanetworks.com/support/knowledgebase/50160000000I9uq 
you can check these by telnetting from these servers to the barracuda and attempting to send.
if all that is good then you need to configure the outgoing to use the barracuda.
see http://support.kaspersky.com/7050 this gives you some pictures to follow. It is for setting up a new connector but you should be able to just adjust the properties of the existing connector.

cheers
Andrew.
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marceloNYCMiddle-Tier AdministratorAuthor Commented:
Thank you guys!
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