diff -r ac0e7f713d70 src/auth/auth-request.c
--- a/src/auth/auth-request.c	Mon Oct 29 22:59:49 2007 +0200
+++ b/src/auth/auth-request.c	Tue Nov 06 17:21:36 2007 +0530
@@ -1040,8 +1040,17 @@ void auth_request_set_field(struct auth_
 			request->proxy = TRUE;
 			request->no_login = TRUE;
 			value = NULL;
-		}
-
+		} else if (strcmp(name, "host") == 0) {
+			if ((value = resolve_proxy_host_maybe(value)) != NULL) 
+				i_info("resolved host: %s", value);
+			else
+				value = NULL;
+				
+			if (request->extra_fields == NULL)
+				request->extra_fields = auth_stream_reply_init(request);
+		  	auth_stream_reply_add(request->extra_fields, name, value);
+    	}
+		
 		if (request->extra_fields == NULL)
 			request->extra_fields = auth_stream_reply_init(request);
 		auth_stream_reply_add(request->extra_fields, name, value);
@@ -1058,6 +1067,38 @@ void auth_request_set_field(struct auth_
 		auth_stream_reply_add(request->extra_cache_fields, name, value);
 	}
 }
+    
+const char * resolve_proxy_host_maybe(const char * host) {
+	struct ip_addr * ip_list;
+	struct ip_addr ip;
+	unsigned int ret, ips_count;
+	
+	if (net_addr2ip(host, &ip) < 0) {
+		i_info("resolve_maybe: %s is not a valid IP, must be a name",
+			host);
+
+    	ret = net_gethostbyname(host, &ip_list, &ips_count);
+	
+    	if (ret != 0) {
+			i_fatal("resolve_maybe: Can't resolve address %s: %s",
+				host, net_gethosterror(ret));
+      		return NULL;
+		}
+	
+    	if (ips_count < 1) {
+			i_fatal("resolve_maybe: No IPs for address: %s",
+				 host);
+      		return NULL;
+		} 
+	}
+	else 
+		return host;
+	/* return the first ip in the result. */
+	ip = ip_list[0];
+
+	return net_ip2addr(&ip);
+}
+    
 
 void auth_request_set_fields(struct auth_request *request,
 			     const char *const *fields,
diff -r ac0e7f713d70 src/auth/auth-request.h
--- a/src/auth/auth-request.h	Mon Oct 29 22:59:49 2007 +0200
+++ b/src/auth/auth-request.h	Tue Nov 06 16:55:40 2007 +0530
@@ -178,4 +178,5 @@ void auth_request_userdb_callback(enum u
 void auth_request_userdb_callback(enum userdb_result result,
 				  struct auth_request *request);
 
+const char * resolve_proxy_host_maybe(const char * host);
 #endif