Pushing a branch to a remote server fails

[Isuru]

I have a project which uses Git on a remote server. I installed SourceTree for Mac to manage it. I also have a .ssh folder with the private in the root directory where I keep all my projects and the public key is in the server.

I was able to clone the project successfully and even commit+push it back with no problem. Then I ceated a branch in my local repo, added a new file and tried commit+push it. It was committed but the pushing failed with the following error message.

Pushing to git@gitserver:gitbtest

ssh: Could not resolve hostname gitserver: nodename nor servname provided, or not known

fatal: Could not read from remote repository.

Please make sure you have the correct access rights

and the repository exists.

I'm not sure why this is happening. Is there a way to set SSH keys in SourceTree for Mac? I can't seem to find any option to do so.

Any help to resolve this would be great.

Thank you!

[Seth]

The key message here is "ssh: Could not resolve hostname gitserver: nodename nor servname provided, or not known". http://bit.ly/1tqBEgl