Remote host said: 550 5.2.1 Mail from 209.X.X.X refused: spa

Dear All,
My Friend is facing a problem he is not able to send mails from outside for e.g yahoo.com his mx is natted on the firewall to my exchange server.
Sender gets a bounce back mail stating below: -
<XXX>:
203.X.X.X does not like recipient.
Remote host said: 550 5.2.1 Mail from 209.X.X.X refused: spam site.
Giving up on 203.X.X.X.
Sorry but i dont know whether this forum should answer my querries which are actually of my friends.
But if you could it would be really helpful.
Thanks in advance.
Regards,
Ranjit

Hi Ranjit,
203.X.X.X does not like recipient.
Remote host said: 550 5.2.1 Mail from 209.X.X.X refused: spam site.
Giving up on 203.X.X.X.
implies that the recipient server is using antispam or blacklist software to refuse connections from certain IP addresses, including the 209.x.x.x address you cited.
I would consider using an RBL lookup tool such as
http://www.mxtoolbox.com/blacklists.aspx to check the 209.x.x.x address against different RBLs.
If it turns out that it is indeed listed, you would need to go to the respective listing site to see how to get off their list.
( I am not affiliated with mxtoolbox, they just have a convenient lookup tool on their site )

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    0 0 RETURN all -- * * 247.0.0.0/8 0.0.0.0/0
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    0 0 RETURN all -- * * 251.0.0.0/8 0.0.0.0/0
    0 0 RETURN all -- * * 252.0.0.0/8 0.0.0.0/0
    0 0 RETURN all -- * * 253.0.0.0/8 0.0.0.0/0
    0 0 RETURN all -- * * 254.0.0.0/8 0.0.0.0/0
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    0 0 in_lan_ftp_c3 all -- * * 0.0.0.0/0 0.0.0.0/0
    0 0 in_lan_irc_c4 all -- * * 0.0.0.0/0 0.0.0.0/0
    0 0 ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0 state RELATED
    0 0 LOG all -- * * 0.0.0.0/0 0.0.0.0/0 limit: avg 1/sec burst 5 LOG flags 0 level 4 prefix "IN-lan:"
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    pkts bytes target prot opt in out source destination
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    Chain in_lan_ftp_c3 (1 references)
    pkts bytes target prot opt in out source destination
    0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp spt:21 dpts:32768:61000 state ESTABLISHED
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    40 1600 in_router1_irc_s3 all -- * * 0.0.0.0/0 0.0.0.0/0
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    pkts bytes target prot opt in out source destination
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    pkts bytes target prot opt in out source destination
    0 0 RETURN all -- * * 0.0.0.0/0 0.0.0.0/8
    0 0 RETURN all -- * * 0.0.0.0/0 10.0.0.0/8
    0 0 RETURN all -- * * 0.0.0.0/0 127.0.0.0/8
    0 0 RETURN all -- * * 0.0.0.0/0 240.0.0.0/8
    0 0 RETURN all -- * * 0.0.0.0/0 241.0.0.0/8
    0 0 RETURN all -- * * 0.0.0.0/0 242.0.0.0/8
    0 0 RETURN all -- * * 0.0.0.0/0 243.0.0.0/8
    0 0 RETURN all -- * * 0.0.0.0/0 244.0.0.0/8
    0 0 RETURN all -- * * 0.0.0.0/0 245.0.0.0/8
    0 0 RETURN all -- * * 0.0.0.0/0 246.0.0.0/8
    0 0 RETURN all -- * * 0.0.0.0/0 247.0.0.0/8
    0 0 RETURN all -- * * 0.0.0.0/0 248.0.0.0/8
    0 0 RETURN all -- * * 0.0.0.0/0 249.0.0.0/8
    0 0 RETURN all -- * * 0.0.0.0/0 250.0.0.0/8
    0 0 RETURN all -- * * 0.0.0.0/0 251.0.0.0/8
    0 0 RETURN all -- * * 0.0.0.0/0 252.0.0.0/8
    0 0 RETURN all -- * * 0.0.0.0/0 253.0.0.0/8
    0 0 RETURN all -- * * 0.0.0.0/0 254.0.0.0/8
    0 0 RETURN all -- * * 0.0.0.0/0 255.0.0.0/8
    0 0 RETURN all -- * * 0.0.0.0/0 10.0.0.0/8
    0 0 RETURN all -- * * 0.0.0.0/0 169.254.0.0/16
    0 0 RETURN all -- * * 0.0.0.0/0 172.16.0.0/12
    0 0 RETURN all -- * * 0.0.0.0/0 192.0.2.0/24
    0 0 RETURN all -- * * 0.0.0.0/0 192.88.99.0/24
    0 0 RETURN all -- * * 0.0.0.0/0 192.168.0.0/16
    3537 261819 out_ifinternet_all_c1 all -- * * 0.0.0.0/0 0.0.0.0/0
    0 0 out_ifinternet_ftp_c2 all -- * * 0.0.0.0/0 0.0.0.0/0
    0 0 out_ifinternet_irc_c3 all -- * * 0.0.0.0/0 0.0.0.0/0
    0 0 ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0 state RELATED
    0 0 LOG all -- * * 0.0.0.0/0 0.0.0.0/0 limit: avg 1/sec burst 5 LOG flags 0 level 4 prefix "OUT-ifinternet:"
    0 0 DROP all -- * * 0.0.0.0/0 0.0.0.0/0
    Chain out_ifinternet_all_c1 (1 references)
    pkts bytes target prot opt in out source destination
    3536 261748 ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0 state NEW,ESTABLISHED
    Chain out_ifinternet_ftp_c2 (1 references)
    pkts bytes target prot opt in out source destination
    0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp spts:32768:61000 dpt:21 state NEW,ESTABLISHED
    0 0 ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED helper match "ftp"
    Chain out_ifinternet_irc_c3 (1 references)
    pkts bytes target prot opt in out source destination
    0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp spts:32768:61000 dpt:6667 state NEW,ESTABLISHED
    0 0 ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED helper match "irc"
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    pkts bytes target prot opt in out source destination
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    10 5760 out_lan_all_c2 all -- * * 0.0.0.0/0 0.0.0.0/0
    10 5760 out_lan_ftp_c3 all -- * * 0.0.0.0/0 0.0.0.0/0
    10 5760 out_lan_irc_c4 all -- * * 0.0.0.0/0 0.0.0.0/0
    10 5760 ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0 state RELATED
    0 0 LOG all -- * * 0.0.0.0/0 0.0.0.0/0 limit: avg 1/sec burst 5 LOG flags 0 level 4 prefix "OUT-lan:"
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    Chain out_lan_ICMP_s1 (1 references)
    pkts bytes target prot opt in out source destination
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    Chain out_lan_all_c2 (1 references)
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    pkts bytes target prot opt in out source destination
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    16 2592 out_router1_irc_s3 all -- * * 0.0.0.0/0 0.0.0.0/0
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    Chain out_router1_all_s1 (1 references)
    pkts bytes target prot opt in out source destination
    2929 2345589 ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0 state ESTABLISHED
    Chain out_router1_ftp_s2 (1 references)
    pkts bytes target prot opt in out source destination
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    pkts bytes target prot opt in out source destination
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    pkts bytes target prot opt in out source destination
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    pkts bytes target prot opt in out source destination
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    pkts bytes target prot opt in out source destination
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    pkts bytes target prot opt in out source destination
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    0 0 LOG all -- * * 0.0.0.0/0 0.0.0.0/0 limit: avg 1/sec burst 5 LOG flags 0 level 4 prefix "SYN FLOOD:"
    0 0 DROP all -- * * 0.0.0.0/0 0.0.0.0/0
    Last edited by distrohopperarched (2012-02-24 15:54:56)

  • 10.5 - 10.6.2: Postfix not accepting e-mails from certain hosts

    Hi
    Two days ago we migrated our server from 10.5 Server to a new Mac mini server running 10.6.2 server.
    We are now facing the problem that postfix refuses to accept incoming e-mails from most hosts. Some hosts seem to be able to get through, but so far we haven't be able to identify a pattern.
    The transfers just times out with various error messages. Below is one of the shorter transscripts. Any ideas where to start looking?
    Feb 5 18:36:12 www postfix/smtpd[34067]: connect from pluto2-mail.kagi.com[67.134.14.166]
    Feb 5 18:36:12 www postfix/smtpd[34067]: setting up TLS connection from pluto2-mail.kagi.com[67.134.14.166]
    Feb 5 18:36:13 www postfix/smtpd[34067]: Anonymous TLS connection established from pluto2-mail.kagi.com[67.134.14.166]: TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)
    Feb 5 18:36:14 www postfix/smtpd[34067]: 42ABB92A50: client=pluto2-mail.kagi.com[67.134.14.166]
    Feb 5 18:41:14 www postfix/smtpd[34067]: warning: networkbiopairinterop: error reading 5 bytes from the network: Connection reset by peer
    Feb 5 18:41:14 www postfix/smtpd[34067]: timeout after DATA (986 bytes) from pluto2-mail.kagi.com[67.134.14.166]
    Feb 5 18:41:14 www postfix/smtpd[34067]: disconnect from pluto2-mail.kagi.com[67.134.14.166]
    Thanks,
    Ilja

    Hi again,
    I was able to further narrow down the problem. The remote server is sending a complete message but postfix on our mac doesn't recognize the end of message token, thus timing out the connection after 5 minutes.
    Any ideas? Is this a postfix issue? If so, what can we do about it.
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    0x02e0: 2039 3437 3039 2d31 3430 3520 2055 5341 .94709-1405..USA
    0x02f0: 0d0a 5351 4e4d 2d6b 6167 6920 3531 3530 ..SQNM-kagi.5150
    0x0300: 0d0a 0d0a 0d0a 0d0a 0d0a 5343 2d54 4659 ..........SC-TFY
    0x0310: 5020 352e 3068 0d0a 2e0d 0a P.5.0h.....
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    0x0000: 4500 0040 22d5 4000 4006 0000 6d46 c4f2 E..@".@[email protected]..
    0x0010: 4386 0c1f 0019 b1b7 685e 0685 d895 c111 C.......h^......
    0x0020: b010 8218 8210 0000 0101 080a 375d d479 ............7].y
    0x0030: 990f 4845 0101 050a d895 cc61 d895 cf48 ..HE.......a...H
    </pre>
    <pre>
    19:48:28.318858 IP (tos 0x0, ttl 64, id 27393, offset 0, flags [DF], proto TCP (6), length 118, bad cksum 0 (->4da3)!)
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    0x0000: 4500 0076 6b01 4000 4006 0000 6d46 c4f2 E..vk.@[email protected]..
    0x0010: 4386 0c1f 0019 b1b7 685e 0685 d895 c111 C.......h^......
    0x0020: b018 8218 8246 0000 0101 080a 375d e02d .....F......7].-
    0x0030: 990f 4845 0101 050a d895 cc61 d895 cf48 ..HE.......a...H
    0x0040: 3432 3120 342e 342e 3220 7777 772e 6977 421.4.4.2.www.iw
    0x0050: 6173 636f 6469 6e67 2e63 6f6d 2045 7272 ascoding.com.Err
    0x0060: 6f72 3a20 7469 6d65 6f75 7420 6578 6365 or:.timeout.exce
    0x0070: 6564 6564 0d0a eded..
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    www.mydomain.com.smtp > terra.kagi.com.45495: Flags [F.], cksum 0x8210 (incorrect -> 0x3c67), seq 345, ack 1186, win 33304, options [nop,nop,TS val 928899117 ecr 2567915589,nop,nop,sack 1 {4082:4825}], length 0
    0x0000: 4500 0040 b563 4000 4006 0000 6d46 c4f2 [email protected]@[email protected]..
    0x0010: 4386 0c1f 0019 b1b7 685e 06bb d895 c111 C.......h^......
    0x0020: b011 8218 8210 0000 0101 080a 375d e02d ............7].-
    0x0030: 990f 4845 0101 050a d895 cc61 d895 cf48 ..HE.......a...H
    </pre>
    Regards,
    Ilja

  • 'Connect to Remote Host' is disabled

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    Hi David
    Everything that you said is how it is already setup.
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    He is actually already using the site, but only through GET and PUT commands, never being able to actually see what is on the server!
    I created the site on my machine a while ago (before updating to cs4), and I wondered if it was something to do with that? I had just made some amends to the site before setting the FTP up in Dw on my boss' Mac.
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    cheers
    Gareth

  • TcpListener not working on Azure: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host

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    using System;
    using System.Net;
    using Microsoft.WindowsAzure.ServiceRuntime;
    using System.Net.Sockets;
    using System.Text;
    using Roche.Emac.Infrastructure;
    using System.IO;
    using System.Threading.Tasks;
    using Microsoft.WindowsAzure.Diagnostics;
    using System.Linq;
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    LoggingProvider.Logger.Exception("Unexpected exception while writting the response", e);
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    // Set the maximum number of concurrent connections
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    e.Cancel = true;
    As you can see, nothing special is being done. I've used the RoleEnvironment.CurrentRoleInstance.InstanceEndpoints to retrieve the current IPEndpoint.
    Running the Cloud Service in the Windows Azure Compute Emulator everything works fine, but when I deploy it in Azure, then I receive the following Exception:
    2014-08-06 14:55:23,816 [Role Start Thread] INFO EMAC Log - TcpListenerWorkerRole entry point called
    2014-08-06 14:55:24,145 [Role Start Thread] INFO EMAC Log - TcpListener started at '100.74.10.55:10100'
    2014-08-06 15:06:19,375 [9] INFO EMAC Log - Client connected. Address='196.3.50.254:51934'
    2014-08-06 15:06:19,375 [9] INFO EMAC Log - Buffer size: 65536
    2014-08-06 15:06:45,491 [9] FATAL EMAC Log - Unexpected exception while Reading the request
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    at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
    --- End of inner exception stack trace ---
    at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
    at System.IO.StreamReader.ReadBuffer(Char[] userBuffer, Int32 userOffset, Int32 desiredChars, Boolean& readToUserBuffer)
    at System.IO.StreamReader.Read(Char[] buffer, Int32 index, Int32 count)
    at TcpListenerWorkerRole.WorkerRole.<>c__DisplayClass0.<<Run>b__2>d__0.MoveNext() in C:\Work\Own projects\EMAC\AzureCloudEmac\TcpListenerWorkerRole\WorkerRole.cs:line 60
    I've already tried to configure an internal port in the ServiceDefinition.csdef file, but I get the same exception there.
    As you can see, the client can connect to the service (the log shows the message: Client connected with the address) but when it tries to read the bytes from the stream, it throws the exception.
    For me it seems like Azure is preventing the retrieval of the message. I've tried to disable the Firewall in the VM in Azure and the same continues happening.
    I'm using Windows Azure SDK 2.3
    Any help will be very very welcome!
    Thanks in advance!
    Javier
    En caso de que la respuesta te sirva, porfavor, márcala como válida
    Muchas gracias y suerte!
    Javier Jiménez Roda
    Blog: http://jimenezroda.wordpress.com

    hi Javier,
    I changed your code like this:
    private AutoResetEvent connectionWaitHandle = new AutoResetEvent(false);
    public override void Run()
    TcpListener listener = null;
    try
    listener = new TcpListener(
    RoleEnvironment.CurrentRoleInstance.InstanceEndpoints["Endpoint"].IPEndpoint);
    listener.ExclusiveAddressUse = false;
    listener.Start();
    catch (SocketException se)
    return;
    while (true)
    IAsyncResult result = listener.BeginAcceptTcpClient(HandleAsyncConnection, listener);
    connectionWaitHandle.WaitOne();
    The HandleAsync method is your "While (true)" code:
    private void HandleAsyncConnection(IAsyncResult result)
    TcpListener listener = (TcpListener)result.AsyncState;
    TcpClient client = listener.EndAcceptTcpClient(result);
    connectionWaitHandle.Set();
    NetworkStream netStream = client.GetStream();
    StreamReader reader = new StreamReader(netStream);
    StreamWriter writer = new StreamWriter(netStream);
    writer.AutoFlush = true;
    string input = string.Empty;
    try
    char[] receivedChars = new char[client.ReceiveBufferSize];
    // LoggingProvider.Logger.Info("Buffer size: " + client.ReceiveBufferSize);
    int readedChars = reader.Read(receivedChars, 0, client.ReceiveBufferSize);
    char[] validChars = new char[readedChars];
    Array.ConstrainedCopy(receivedChars, 0, validChars, 0, readedChars);
    input = new string(validChars);
    // LoggingProvider.Logger.Info("This is what the host sent to you: " + input + ". Readed chars=" + readedChars);
    try
    string orderResultFormat = Encoding.ASCII.GetString(Encoding.ASCII.GetBytes("\xB")) + @"MSH|^~\&|Instrument|Laboratory|LIS|LIS Facility|20120427123212+0100||ORL^O34^ORL_O34| 11|P|2.5.1||||||UNICODE UTF-8|||LAB-28^IHE" + Environment.NewLine + "MSA|AA|10" + Environment.NewLine + @"PID|||patientId||""""||19700101|M" + Environment.NewLine + "SPM|1|sampleId&ROCHE||ORH^^HL70487|||||||P^^HL70369" + Environment.NewLine + "SAC|||sampleId" + Environment.NewLine + "ORC|OK|orderId|||SC||||20120427123212" + Encoding.ASCII.GetString(Encoding.ASCII.GetBytes("\x1c\x0d"));
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    // LoggingProvider.Logger.Exception("Unexpected exception while writting the response", e);
    client.Close();
    catch (Exception ex)
    //LoggingProvider.Logger.Exception("Unexpected exception while Reading the request", ex);
    client.Close();
    Please try it. For this error message, I suggest you could refer to this thread (http://stackoverflow.com/questions/6173763/using-windows-azure-to-use-as-a-tcp-server
    ) and this post (http://stackoverflow.com/a/5420788).
    Regards,
    Will
    We are trying to better understand customer views on social support experience, so your participation in this interview project would be greatly appreciated if you have time. Thanks for helping make community forums a great place.
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  • Unable to delete file on the remote host

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