diff --git a/ReviewBot.py b/ReviewBot.py
index 9a7a29fe..ffab227c 100644
--- a/ReviewBot.py
+++ b/ReviewBot.py
@@ -28,6 +28,7 @@ from collections import namedtuple
 from osclib.memoize import memoize
 import signal
 import datetime
+from collections import namedtuple
 
 try:
     from xml.etree import cElementTree as ET
@@ -62,6 +63,31 @@ class ReviewBot(object):
         self.fallback_user = None
         self.fallback_group = None
 
+        # map of default config entries
+        self.config_defaults = {
+                # list of tuples (prefix, apiurl)
+                # set this if the obs instance maps another instance into it's
+                # namespace
+                'project_namespace_api_map' : [
+                    ('openSUSE.org:', 'https://api.opensuse.org'),
+                    ],
+                }
+
+        self.load_config()
+
+    def _load_config(self, handle = None):
+        d = self.config_defaults
+        y = yaml.safe_load(handle) if handle is not None else {}
+        return namedtuple('BotConfig', sorted(d.keys()))(*[ y.get(p, d[p]) for p in sorted(d.keys()) ])
+
+    def load_config(self, filename = None):
+        if filename:
+            fh = open(filename, 'r')
+            self.config = self._load_config(fh)
+            close(fh)
+        else:
+            self.config = self._load_config()
+
     @property
     def review_mode(self):
         return self._review_mode
@@ -364,6 +390,7 @@ class CommandLineInterface(cmdln.Cmdln):
         parser.add_option("--review-mode", dest='review_mode', choices=ReviewBot.REVIEW_CHOICES, help="review behavior")
         parser.add_option("--fallback-user", dest='fallback_user', metavar='USER', help="fallback review user")
         parser.add_option("--fallback-group", dest='fallback_group', metavar='GROUP', help="fallback review group")
+        parser.add_option('-c', '--config', dest='config', metavar='FILE', help='read config file FILE')
 
         return parser
 
@@ -383,6 +410,8 @@ class CommandLineInterface(cmdln.Cmdln):
             osc.conf.config['debug'] = 1
 
         self.checker = self.setup_checker()
+        if self.options.config:
+            self.checker.load_config(self.options.config)
 
         if self.options.review_mode:
             self.checker.review_mode = self.options.review_mode
diff --git a/check_source_in_factory.py b/check_source_in_factory.py
index 7024e406..7a9514a9 100755
--- a/check_source_in_factory.py
+++ b/check_source_in_factory.py
@@ -130,16 +130,25 @@ class FactorySourceChecker(ReviewBot.ReviewBot):
 
     def _check_requests(self, project, package, rev):
         self.logger.debug("checking requests")
+        prjprefix = ''
         try:
-            requests = osc.core.get_request_list(self.apiurl, project, package, None, ['new', 'review'], 'submit')
+            apiurl = self.apiurl
+            if self.config.project_namespace_api_map:
+                for prefix, url in self.config.project_namespace_api_map:
+                    if project.startswith(prefix):
+                        apiurl = url
+                        prjprefix = prefix
+                        project = project[len(prefix):]
+                        break
+            requests = osc.core.get_request_list(apiurl, project, package, None, ['new', 'review'], 'submit')
         except (urllib2.HTTPError, urllib2.URLError):
             self.logger.error("caught exception while checking %s/%s", project, package)
             return None
 
         for req in requests:
             for a in req.actions:
-                si = self.get_sourceinfo(a.src_project, a.src_package, a.src_rev)
-                self.logger.debug("rq %s: %s/%s@%s"%(req.reqid, a.src_project, a.src_package, si.verifymd5))
+                si = self.get_sourceinfo(prjprefix + a.src_project, a.src_package, a.src_rev)
+                self.logger.debug("rq %s: %s/%s@%s"%(req.reqid, prjprefix + a.src_project, a.src_package, si.verifymd5))
                 if si.verifymd5 == rev:
                     if req.state.name == 'new':
                         self.logger.info("sr#%s ok", req.reqid)