Domain Admin Mail via SOAP

[liriarte]

How Can I get the domain administrator's mail ??

It is a domain attribute? How Can I get it? Which key?
This is my code:

SoapProvisioning sp = this.login();
if (sp != null) {
try {
Map<String, Object> attrs = new HashMap<String, Object>();
attrs.put("description", description);
attrs.put("zimbraNotes", notes);
Domain dom = sp.createDomain(name, attrs);
log.info("New Domain created: " + dom.getName());
return dom.getName();
} catch (Exception e) {
e.printStackTrace();
log.error(e);
return null;
}
}