SharePoint 2010 How to Disable alerts on one server

Question

We have a farm with about 8 web front ends and 6 Web application servers.  The network is run by a different team, when they did an update to the domain somehow one of my web application servers became blocked from accessing the email server. So alerts
on that server no longer work.  Immediate alerts are constantly hanging. 
I was wondering if there is a command to disable or remove immediate alerts from processing on that one server until things get corrected by the network team.
When I look in central admin and look at the services on the server, I don't see one specifically for immediate alerts.
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Answer 1

Ok, I think I have come up with a temporary solution for this.  So hopefully this helps others.
I set the preferred server in every content database to any other server except the one that can't communicate with the SMTP server.
To do this:
Open Central Administration
Under Application Management, under the databases section, click on the Manage content databases link
For each database select it.
At the bottom of the manage content database setting page select a preferred sever.
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