Re: 答复: Our server keeps getting blocked
Richard Ford <[email protected]> Wed, 23 Feb 2005 09:36:13 +0800
| Newsgroups | gmane.org.user-groups.linux.beijing.tech |
|---|---|
| Organization | Creditude |
| Message-ID | <1109122573.5092.0.camel@peach> |
--===============0512456797== Content-Type: multipart/alternative; boundary="=-/Kp3do13Mc01S9BPzL5T" --=-/Kp3do13Mc01S9BPzL5T Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Yes spam is handled that way. That is why you need to run two servers. On off shore for email incoming and outgoing relay and then one in China for client access. RF. On Tue, 2005-02-22 at 18:24 +0800, Ben Gunn wrote: > But I had heard stories of Chinese mail servers being blocked by > foreign clients due to all the spam. In regards to our server > problem, I made some firewall configuration changes and it seems to > have done the trick. However this could just be coincidence. Like I > said this is a reoccurring problem. As Fred said the “problem is > gone….until it comes back”. > > > > Ben > > > > > ______________________________________________________________________ > > 发件人: blug-tech-bounces-+qp3TudyjKPvfBIPTTProkB+6BGkLq7r@public.gmane.org [mailto:blug-tech- > [email protected]] 代表 Richard Ford > 发送时间: 2005年2月22日 17:48 > 收件人: Beijing LUG technical questions and assistance - Publicly posted > 主题: RE: [blug-tech] Our server keeps getting blocked > > > > > Best advice. > > Do business in China, host in China. > > RF. > > > > > On Mon, 2005-02-21 at 20:16 +0800, Frederic Muller wrote: > > > > I have had the same problem with China Telecom (in Guangdong area though) > and complained very hard to them. They could not explain the source of the > problem (we changed host and the next day the new host was blocked), even > installed a PC in our DMZ to check the connection (it once lasted for 4-5 > days... hard to handle business that way) and for now the problem is gone.. > until it comes back. > > So you're not alone. > > Fred > > -----Original Message----- > From: blug-tech-bounces-+qp3TudyjKPvfBIPTTProkB+6BGkLq7r@public.gmane.org > [mailto:blug-tech-bounces-+qp3TudyjKPvfBIPTTProkB+6BGkLq7r@public.gmane.org] On Behalf Of Ben Gunn > Sent: Monday 21 February, 2005 13:53 > To: 'Beijing LUG technical questions and assistance - Publicly posted' > Subject: [blug-tech] Our server keeps getting blocked > > > Hi All, > > I am hoping one of you might be able to provide some insight into a problem > we are having with our server. Our company uses a server which is hosted by > lunarpages.com in the US. Over the last several weeks we have been having > an unending stream of connection problems. Access to our website and mail > server keeps coming up and going down (although it stays down more than it > is up). > > I have been doing some research into the issue and this is what I have > discovered: > 1. The server name is resolving correctly so I don't believe it is a > DNS issue. > 2. If I go to our site via a proxy server located in a country other > than China there is no problem. > 3. If I go through an anonymous proxy within China I cannot get to the > server. > 4. The problem is intermittent (sometimes there is no problem, then all > of a sudden we cannot connect, then it will eventually work again) > > Additional info: > This problem was getting so severe that we recently changed hosts (now we > are using lunarpages.com). After the change the problem seemed to have been > solved (with only the occasional connection problem), however, now it > appears that the same problem is occurring. > > I would love to hear any ideas as to what the issue may be. If the host was > being blocked, why would it only work part of the time? Perhaps it is a > problem with our office server, which functions as a router (IP > masquerading). However, in the past it has been working perfectly and the > configuration has not been altered anytime recently. Furthermore I can get > to any other website just not ours. Frustration extreme!!!!! > > Thanks in advance, > > Ben > > _______________________________________________ > blug-tech list > [email protected] > http://list.beijinglug.org/cgi-bin/mailman/listinfo/blug-tech > > > _______________________________________________ > blug-tech list > [email protected] > http://list.beijinglug.org/cgi-bin/mailman/listinfo/blug-tech --=-/Kp3do13Mc01S9BPzL5T Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 7bit <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 TRANSITIONAL//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=UTF-8"> <META NAME="GENERATOR" CONTENT="GtkHTML/3.3.2"> </HEAD> <BODY LINK="#0000ff"> Yes spam is handled that way. That is why you need to run two servers.<BR> <BR> On off shore for email incoming and outgoing relay and then one in China for client access.<BR> <BR> RF.<BR> <BR> <BR> On Tue, 2005-02-22 at 18:24 +0800, Ben Gunn wrote:<BR> <BLOCKQUOTE TYPE=CITE> <FONT SIZE="1"><FONT COLOR="#000080">But I had heard stories of Chinese mail servers being blocked by foreign clients due to all the spam. In regards to our server problem, I made some firewall configuration changes and it seems to have done the trick. However this could just be coincidence. Like I said this is a reoccurring problem. As Fred said the “problem is gone….until it comes back”.</FONT></FONT><BR> <BR> <FONT SIZE="1"><FONT COLOR="#000080"> </FONT></FONT><BR> <BR> <FONT SIZE="1"><FONT COLOR="#000080">Ben</FONT></FONT><BR> <BR> <FONT SIZE="1"><FONT COLOR="#000080"> </FONT></FONT><BR> <BR> <DIV ALIGN=center> <HR> </DIV><BR> <BR> <B><FONT SIZE="2"><FONT COLOR="#000000">发件人:</FONT></FONT></B><FONT COLOR="#000000"><FONT SIZE="2"> blug-tech-bounces-+qp3TudyjKPvfBIPTTProkB+6BGkLq7r@public.gmane.org [mailto:blug-tech-bounces-+qp3TudyjKPvfBIPTTProkB+6BGkLq7r@public.gmane.org] </FONT></FONT><FONT COLOR="#000000"><B><FONT SIZE="2">代表 </FONT></B></FONT><FONT COLOR="#000000"><FONT SIZE="2">Richard Ford</FONT></FONT><BR> <B><FONT SIZE="2"><FONT COLOR="#000000">发送时间:</FONT></FONT></B><FONT COLOR="#000000"><FONT SIZE="2"> 2005年2月22日 17:48</FONT></FONT><BR> <B><FONT SIZE="2"><FONT COLOR="#000000">收件人:</FONT></FONT></B><FONT COLOR="#000000"><FONT SIZE="2"> Beijing LUG technical questions and assistance - Publicly posted</FONT></FONT><BR> <B><FONT SIZE="2"><FONT COLOR="#000000">主题:</FONT></FONT></B><FONT COLOR="#000000"><FONT SIZE="2"> RE: [blug-tech] Our server keeps getting blocked</FONT></FONT><BR> <BR> <BR> <FONT COLOR="#000000"> </FONT><BR> <BR> <FONT COLOR="#000000">Best advice.</FONT><BR> <BR> <FONT COLOR="#000000">Do business in China, host in China.</FONT><BR> <BR> <FONT COLOR="#000000">RF.</FONT><BR> <BR> <BR> <BR> <BR> <FONT COLOR="#000000">On Mon, 2005-02-21 at 20:16 +0800, Frederic Muller wrote: </FONT><BR> <BR> <PRE> <FONT COLOR="#000000"> </FONT> <FONT COLOR="#000000">I have had the same problem with China Telecom (in Guangdong area though)</FONT> <FONT COLOR="#000000">and complained very hard to them. They could not explain the source of the</FONT> <FONT COLOR="#000000">problem (we changed host and the next day the new host was blocked), even</FONT> <FONT COLOR="#000000">installed a PC in our DMZ to check the connection (it once lasted for 4-5</FONT> <FONT COLOR="#000000">days... hard to handle business that way) and for now the problem is gone..</FONT> <FONT COLOR="#000000">until it comes back.</FONT> <FONT COLOR="#000000"> </FONT> <FONT COLOR="#000000">So you're not alone.</FONT> <FONT COLOR="#000000"> </FONT> <FONT COLOR="#000000">Fred</FONT> <FONT COLOR="#000000"> </FONT> <FONT COLOR="#000000">-----Original Message-----</FONT> <FONT COLOR="#000000">From: <A HREF="mailto:blug-tech-bounces-+qp3TudyjKPvfBIPTTProkB+6BGkLq7r@public.gmane.org">blug-tech-bounces-+qp3TudyjKPvfBIPTTProkB+6BGkLq7r@public.gmane.org</A></FONT> <FONT COLOR="#000000">[mailto:<A HREF="mailto:blug-tech-bounces-+qp3TudyjKPvfBIPTTProkB+6BGkLq7r@public.gmane.org">blug-tech-bounces-+qp3TudyjKPvfBIPTTProkB+6BGkLq7r@public.gmane.org</A>] On Behalf Of Ben Gunn</FONT> <FONT COLOR="#000000">Sent: Monday 21 February, 2005 13:53</FONT> <FONT COLOR="#000000">To: 'Beijing LUG technical questions and assistance - Publicly posted'</FONT> <FONT COLOR="#000000">Subject: [blug-tech] Our server keeps getting blocked</FONT> <FONT COLOR="#000000"> </FONT> <FONT COLOR="#000000"> </FONT> <FONT COLOR="#000000">Hi All,</FONT> <FONT COLOR="#000000"> </FONT> <FONT COLOR="#000000">I am hoping one of you might be able to provide some insight into a problem</FONT> <FONT COLOR="#000000">we are having with our server. Our company uses a server which is hosted by</FONT> <FONT COLOR="#000000">lunarpages.com in the US. Over the last several weeks we have been having</FONT> <FONT COLOR="#000000">an unending stream of connection problems. Access to our website and mail</FONT> <FONT COLOR="#000000">server keeps coming up and going down (although it stays down more than it</FONT> <FONT COLOR="#000000">is up). </FONT> <FONT COLOR="#000000"> </FONT> <FONT COLOR="#000000">I have been doing some research into the issue and this is what I have</FONT> <FONT COLOR="#000000">discovered:</FONT> <FONT COLOR="#000000">1. The server name is resolving correctly so I don't believe it is a</FONT> <FONT COLOR="#000000">DNS issue.</FONT> <FONT COLOR="#000000">2. If I go to our site via a proxy server located in a country other</FONT> <FONT COLOR="#000000">than China there is no problem.</FONT> <FONT COLOR="#000000">3. If I go through an anonymous proxy within China I cannot get to the</FONT> <FONT COLOR="#000000">server.</FONT> <FONT COLOR="#000000">4. The problem is intermittent (sometimes there is no problem, then all</FONT> <FONT COLOR="#000000">of a sudden we cannot connect, then it will eventually work again)</FONT> <FONT COLOR="#000000"> </FONT> <FONT COLOR="#000000">Additional info:</FONT> <FONT COLOR="#000000">This problem was getting so severe that we recently changed hosts (now we</FONT> <FONT COLOR="#000000">are using lunarpages.com). After the change the problem seemed to have been</FONT> <FONT COLOR="#000000">solved (with only the occasional connection problem), however, now it</FONT> <FONT COLOR="#000000">appears that the same problem is occurring.</FONT> <FONT COLOR="#000000"> </FONT> <FONT COLOR="#000000">I would love to hear any ideas as to what the issue may be. If the host was</FONT> <FONT COLOR="#000000">being blocked, why would it only work part of the time? Perhaps it is a</FONT> <FONT COLOR="#000000">problem with our office server, which functions as a router (IP</FONT> <FONT COLOR="#000000">masquerading). However, in the past it has been working perfectly and the</FONT> <FONT COLOR="#000000">configuration has not been altered anytime recently. Furthermore I can get</FONT> <FONT COLOR="#000000">to any other website just not ours. Frustration extreme!!!!!</FONT> <FONT COLOR="#000000"> </FONT> <FONT COLOR="#000000">Thanks in advance,</FONT> <FONT COLOR="#000000"> </FONT> <FONT COLOR="#000000">Ben</FONT> <FONT COLOR="#000000"> </FONT> <FONT COLOR="#000000">_______________________________________________</FONT> <FONT COLOR="#000000">blug-tech list</FONT> <FONT COLOR="#000000"><A HREF="mailto:[email protected]">[email protected]</A></FONT> <FONT COLOR="#000000"><A HREF="http://list.beijinglug.org/cgi-bin/mailman/listinfo/blug-tech">http://list.beijinglug.org/cgi-bin/mailman/listinfo/blug-tech</A></FONT> <FONT COLOR="#000000"> </FONT> <FONT COLOR="#000000"> </FONT> <FONT COLOR="#000000">_______________________________________________</FONT> <FONT COLOR="#000000">blug-tech list</FONT> <FONT COLOR="#000000"><A HREF="mailto:[email protected]">[email protected]</A></FONT> <FONT COLOR="#000000"><A HREF="http://list.beijinglug.org/cgi-bin/mailman/listinfo/blug-tech">http://list.beijinglug.org/cgi-bin/mailman/listinfo/blug-tech</A></FONT> </PRE> </BLOCKQUOTE> </BODY> </HTML> --=-/Kp3do13Mc01S9BPzL5T-- --===============0512456797== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline