diff --git a/src/main/java/org/asamk/signal/Main.java b/src/main/java/org/asamk/signal/Main.java
index 8aede3d6..4e0fc3b8 100644
--- a/src/main/java/org/asamk/signal/Main.java
+++ b/src/main/java/org/asamk/signal/Main.java
@@ -403,7 +403,7 @@ public class Main {
                         if (ns.getString("group") != null) {
                             groupId = decodeGroupId(ns.getString("group"));
                         }
-                        byte[] newGroupId = m.sendUpdateGroupMessage(groupId, ns.getString("name"), ns.<String>getList("member"), ns.getString("avatar"));
+                        byte[] newGroupId = m.sendUpdateGroupMessage(groupId, ns.getString("name"), ns.<String>getList("member"), ns.getString("avatar"), ns.getString("quit")!=null);
                         if (groupId == null) {
                             System.out.println("Creating new group \"" + Base64.encodeBytes(newGroupId) + "\" …");
                         }
@@ -504,7 +504,7 @@ public class Main {
                 .help("Show package version.")
                 .action(Arguments.version());
         parser.addArgument("--config")
-                .help("Set the path, where to store the config (Default: $HOME/.config/signal-cli).");
+                .help("Set the path, where to store the config (Default: $HOME/.config/signal).");
 
         MutuallyExclusiveGroup mut = parser.addMutuallyExclusiveGroup();
         mut.addArgument("-u", "--username")
@@ -550,7 +550,7 @@ public class Main {
 
         Subparser parserSend = subparsers.addParser("send");
         parserSend.addArgument("-g", "--group")
-                .help("Specify the recipient group ID.");
+                .help("Specify the recipient group ID. If '-m' parameter is not present the messag is read from STDIN and yuo have to type <ENTER>CTRL+D<ENTER> (aka EOF) in order to stop reading and sending the content");
         parserSend.addArgument("recipient")
                 .help("Specify the recipients' phone number.")
                 .nargs("*");
@@ -575,6 +575,9 @@ public class Main {
                 .help("Specify the new group name.");
         parserUpdateGroup.addArgument("-a", "--avatar")
                 .help("Specify a new group avatar image file");
+        parserUpdateGroup.addArgument("-q", "--quit")
+                .help("Quit from the group")
+                .action(Arguments.storeTrue());
         parserUpdateGroup.addArgument("-m", "--member")
                 .nargs("*")
                 .help("Specify one or more members to add to the group");
diff --git a/src/main/java/org/asamk/signal/Manager.java b/src/main/java/org/asamk/signal/Manager.java
index 6295f730..456fd84a 100644
--- a/src/main/java/org/asamk/signal/Manager.java
+++ b/src/main/java/org/asamk/signal/Manager.java
@@ -63,8 +63,16 @@ import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
 
 class Manager implements Signal {
-    private final static String URL = "https://textsecure-service.whispersystems.org";
-    private final static TrustStore TRUST_STORE = new WhisperTrustStore();
+   // private final static String URL = "https://10.1.4.252:8080";
+   // private final static TrustStore TRUST_STORE = new TenOneFourTwohundredfiftyfourTrustStore();
+
+   // private final static String URL = "https://127.0.0.1:8080";
+   // private final static TrustStore TRUST_STORE = new LoopbackTrustStore();
+
+    private final static String URL = "https://signal.sinesy.it:8080";
+    private final static TrustStore TRUST_STORE = new SinesyTrustStore();
+    //private final static String URL = "https://textsecure-service.whispersystems.org";
+    //private final static TrustStore TRUST_STORE = new WhisperTrustStore();
 
     public final static String PROJECT_NAME = Manager.class.getPackage().getImplementationTitle();
     public final static String PROJECT_VERSION = Manager.class.getPackage().getImplementationVersion();
@@ -456,7 +464,7 @@ class Manager implements Signal {
         sendMessage(message, g.members);
     }
 
-    public byte[] sendUpdateGroupMessage(byte[] groupId, String name, Collection<String> members, String avatarFile) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException, UntrustedIdentityException {
+    public byte[] sendUpdateGroupMessage(byte[] groupId, String name, Collection<String> members, String avatarFile, boolean quit) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException, UntrustedIdentityException {
         GroupInfo g;
         if (groupId == null) {
             // Create new group
@@ -482,11 +490,12 @@ class Manager implements Signal {
             }
         }
 
-        SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
+        SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(quit?SignalServiceGroup.Type.QUIT:SignalServiceGroup.Type.UPDATE)
                 .withId(g.groupId)
                 .withName(g.name)
                 .withMembers(new ArrayList<>(g.members));
 
+
         if (avatarFile != null) {
             try {
                 group.withAvatar(createAttachment(avatarFile));