Hello,
I get this error on connect both to pop3 or imap:
"TLS socket was closed: System.Net.Sockets.SocketException (0x80004005): An existing connection was forcibly closed by the remote host"
This is the code used:
Pop3 _pop = new Pop3();
SslMode security;
_pop.LogWriter = new Rebex.FileLogWriter(@"C:\Temp\log.txt", Rebex.LogLevel.Verbose);
_pop.Settings.SslAllowedVersions = TlsVersion.SSL30 | TlsVersion.TLS10;
_pop.Settings.SslAllowedSuites = TlsCipherSuite.Secure;
_pop.Settings.SslServerName = "mbox.cert.legalmail.it" /*ma.InboundSrvAddress*/;
security = SslMode.Implicit;
pop.ValidatingCertificate += pop_ValidatingCertificate;
_pop.Connect("mbox.cert.legalmail.it", 995, security);
This is the log:
2019-07-05 14:52:24.623 Opening log file.
2019-07-05 14:52:24.628 INFO FileLogWriter(1)[1] Info: Assembly: Rebex.Common 2019 R3 for .NET 4.0-4.8
2019-07-05 14:52:24.631 INFO FileLogWriter(1)[1] Info: Platform: Windows 6.2.9200 64-bit; CLR: 4.0.30319.42000
2019-07-05 14:52:24.633 DEBUG FileLogWriter(1)[1] Info: Culture: it; Windows-1252
2019-07-05 14:52:24.648 DEBUG Pop3(1)[1] Info: State changed from 'Disconnected' to 'Connecting'.
2019-07-05 14:52:24.648 INFO Pop3(1)[1] Info: Connecting to mbox.cert.legalmail.it:995 using Pop3.
2019-07-05 14:52:24.649 INFO Pop3(1)[1] Info: Assembly: Rebex.Pop3 2019 R3 for .NET 4.0-4.8
2019-07-05 14:52:24.649 INFO Pop3(1)[1] Info: Platform: Windows 6.2.9200 64-bit; CLR: 4.0.30319.42000
2019-07-05 14:52:24.649 DEBUG Pop3(1)[1] Info: Culture: it; Windows-1252
2019-07-05 14:52:24.650 INFO Pop3(1)[1] Info: Connecting to mbox.cert.legalmail.it.
2019-07-05 14:52:24.671 DEBUG Pop3(1)[1] Proxy: Resolving 'mbox.cert.legalmail.it'.
2019-07-05 14:52:24.682 DEBUG Pop3(1)[1] Proxy: Connecting to 185.102.40.53:995 (no proxy).
2019-07-05 14:52:24.719 DEBUG Pop3(1)[1] Info: Connection succeeded.
2019-07-05 14:52:24.723 DEBUG Pop3(1)[1] Info: Upgrading connection to TLS/SSL.
2019-07-05 14:52:24.730 INFO Pop3(1)[1] TLS: Warning: SSL 3.0 has been deprecated. According to RFC 7568, it must no longer be used.
2019-07-05 14:52:24.760 DEBUG Pop3(1)[1] TLS: Enabled cipher suites: 0x000FFCC33F000000.
2019-07-05 14:52:24.761 DEBUG Pop3(1)[1] TLS: Applicable cipher suites: 0x000000003F000000.
2019-07-05 14:52:24.790 VERBOSE Pop3(1)[1] TLS: Sent TLS packet:
0000 |16-03-01-00-5A-01-00-00 56-03-01-5D-1F-48-08-AD| ....Z...V..].H..
0010 |90-D8-BC-88-93-B5-4A-89 53-8E-51-D2-49-F3-C3-DE| ......J.S.Q.I...
0020 |4A-FD-F2-A3-08-40-CF-52 F1-F7-53-00-00-0E-00-6B| J....@.R..S....k
0030 |00-67-00-3D-00-3C-00-6A 00-40-00-FF-01-00-00-1F| .g.=.<.j.@......
0040 |00-00-00-1B-00-19-00-00 16-6D-62-6F-78-2E-63-65| .........mbox.ce
0050 |72-74-2E-6C-65-67-61-6C 6D-61-69-6C-2E-69-74 | rt.legalmail.it
2019-07-05 14:52:24.792 INFO Pop3(1)[1] TLS: State StateChange:Negotiating
2019-07-05 14:52:24.793 DEBUG Pop3(1)[1] TLS: HandshakeMessage:ClientHello was sent.
2019-07-05 14:52:24.834 DEBUG Pop3(1)[1] TLS: TLS socket error, 0 bytes of data were received.
2019-07-05 14:52:24.839 DEBUG Pop3(1)[1] TLS: TLS socket was closed: System.Net.Sockets.SocketException (0x80004005): An existing connection was forcibly closed by the remote host
at System.Net.Sockets.Socket.Receive(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags)
at Rebex.Net.ProxySocket.Receive(Byte[] buffer, Int32 offset, Int32 count, SocketFlags socketFlags)
at pzaa.rtqr(Int32 bcl)
at pzaa.rtqs()
at pzaa.rtqt()
2019-07-05 14:52:24.843 INFO Pop3(1)[1] TLS: Alert Alert:Alert was sent.
2019-07-05 14:52:24.843 INFO Pop3(1)[1] TLS: State StateChange:Closed
2019-07-05 14:52:24.843 VERBOSE Pop3(1)[1] TLS: Sent TLS packet:
0000 |15-03-01-00-02-02-50 | ......P
2019-07-05 14:52:24.847 DEBUG Pop3(1)[1] TLS: Closing TLS socket.
2019-07-05 14:52:24.849 DEBUG Pop3(1)[1] Info: State changed from 'Connecting' to 'Disconnected'.
2019-07-05 14:52:24.850 ERROR Pop3(1)[1] Info: Rebex.Net.TlsException: Connection was closed by the remote connection end. ---> Rebex.Net.TlsException: Connection was closed by the remote connection end. ---> System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host
at System.Net.Sockets.Socket.Receive(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags)
at Rebex.Net.ProxySocket.Receive(Byte[] buffer, Int32 offset, Int32 count, SocketFlags socketFlags)
at pzaa.rtqr(Int32 bcl)
at pzaa.rtqs()
at pzaa.rtqt()
--- End of inner exception stack trace ---
at pzaa.rtqt()
at pzaa.rtra()
at ffph.thxf(TlsParameters jz)
at Rebex.Net.Pop3.bdyv(TlsParameters bm, Boolean bn)
--- End of inner exception stack trace ---
at Rebex.Net.Pop3.bdyv(TlsParameters bm, Boolean bn)
at Rebex.Net.Pop3.bdyt(String bf, Int32 bg, TlsParameters bh, SslMode bi)
The same code works few days ago.
Could you give me some help?
Thanks