diff --git a/trikNetwork/src/mailboxServer.cpp b/trikNetwork/src/mailboxServer.cpp
index e0ad5032..5e19e607 100644
--- a/trikNetwork/src/mailboxServer.cpp
+++ b/trikNetwork/src/mailboxServer.cpp
@@ -103,6 +103,11 @@ void MailboxServer::setHullNumber(int hullNumber)
 
 void MailboxServer::connectTo(const QString &ip, int port)
 {
+	QHostAddress address;
+	if (!address.setAddress(ip)) {
+		QLOG_INFO() << "Connect to ip " << ip << "and port" << port << "with not valid ip";
+		return;
+;	}
 	mAuxiliaryInformationLock.lockForRead();
 	auto server = mServerIp;
 	auto serverPort = mServerPort;
@@ -111,7 +116,12 @@ void MailboxServer::connectTo(const QString &ip, int port)
 	if (server.toString() != ip || serverPort != port) {
 		{
 			QWriteLocker l(&mAuxiliaryInformationLock);
-			mServerIp = QHostInfo::fromName(ip).addresses().first();
+			auto addresses = QHostInfo::fromName(ip).addresses();
+			if (addresses.isEmpty()) {
+				QLOG_INFO() << "Not found addresses for ip " << ip;
+				return;
+			}
+			mServerIp = addresses.first();
 			mServerPort = port;
 		}
 		saveSettings();