Git推送错误：ssh:无法解析主机名domain.com[：7555]：提供了nodename或servname，或者未知

我似乎无法使用Git推送到服务器。但是，我可以通过SSH连接到该框。
我不明白为什么：

$ cat .git/config   
[core]  
    repositoryformatversion = 0  
    filemode = true
    bare = false  
    logallrefupdates = true  
    ignorecase = true  
[remote "server_idm"]  
    url = ssh://username@domain.com[:7555]/home/username/repo_Project/  
    fetch = +refs/heads/*:refs/remotes/server_idm/*  

$git推送服务器\u idm

ssh: Could not resolve hostname domain.com[:7555]: nodename nor servname provided, or not known fatal:  
The remote end hung up unexpectedly  

但是，我可以轻松地通过SSH连接到该框。
$ssh-p7555username@domain.com

Linux servername 2.6.32.9-rscloud #6 SMP Thu Mar 11 14:32:05 UTC 2010 x86_64 GNU/Linux  
Ubuntu 10.04 LTS  

Welcome to Ubuntu!  

Last login: Mon Oct 25 21:22:44 2010 from 8.17.58.38  
username@servername Tue Oct 26 14:01:59 ~   
$ exit  
logout  
Connection to domain.com closed.  

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尝试删除URL中的方括号。

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