If the Artifactory server is accessed via a proxy, you need to configure the proxy by setting the following properties in the $TEAMCITY_USER_HOME/.BuildServer/config/internal.properties file. If the file does not exist, you'll need to create it.
org.jfrog.artifactory.proxy.host org.jfrog.artifactory.proxy.port org.jfrog.artifactory.proxy.username org.jfrog.artifactory.proxy.password
Since version 2.5.0, you can also define a proxy for specific build agents. You do that by adding the TeamCity agent name to the end of the above property names.
For example, if you wish to configure a proxy for the "my-agent" agent, the proxy properties configuration should look as follows:
org.jfrog.artifactory.proxy.host.my-agent org.jfrog.artifactory.proxy.port.my-agent org.jfrog.artifactory.proxy.username.my-agent org.jfrog.artifactory.proxy.password.my-agent
Tip
In case your build agent name contains a white-space, you should replace the white-space in the property name with \u0020.
For example, here's how you define the proxy host for the "Default Agent":
org.jfrog.artifactory.proxy.host.Default\u0020Agent