why I can't post?

[Hou Xiang ZHU]

don't know whether it is greylisting. but all my posts (including the 
previous two) are on the list if I look through webpage. I checked the 
preference of my subscribtion, it enabled to send me the post I send, 
but just can't get it in thunderbird. something wrong? how to solve this 
problem? I don't know my post appears on the list or not. But it is on 
the web archive

regards
houxiang

Mike Klinke wrote:

>On Friday 23 December 2005 00:04, Hou Xiang ZHU wrote:
>  
>
>>This is a test because the previous two post send by me is not
>>shown on this list!
>>
>>why?
>>houxiang
>>    
>>
>
>
>At least some of the Redhat list servers use greylisting.  It 
>appears, looking back through your posts to the list, that your ISP 
>uses several different servers to deliver mail to the list.  For 
>example, here is a list from 5 of your messages to the list showing 
>which of your ISP's mail servers connected to which of Redhat's 
>list servers:
>
>fra-del-03.spheriq.net [195.46.51.99]) by mx1.redhat.com 
>fra-del-01.spheriq.net [195.46.51.97]) by mx3.redhat.com
>lon-del-03.spheriq.net [195.46.50.99]) by mx1.redhat.com
>lon-del-03.spheriq.net [195.46.50.99]) by mx3.redhat.com
>lon-del-02.spheriq.net [195.46.50.98]) by mx1.redhat.com
>
>If your ISP uses a pool of servers to deliver mail where a different 
>server can attempt to deliver mail each time a delivery is tried 
>then greylisting can effectively block your messages until the same 
>server at your ISP tries to deliver a second time to the same 
>Redhat list server.  You would have to be able to see the logs at 
>your ISP's above listed mail servers in order to be sure this is 
>the problem though.
>
>Greylisting does have a mechanism to allow mail to get through in 
>this type of scenario but you'd have to discuss this with the 
>Redhat mail server administrator(s).
>
>Regards, Mike Klinke
>
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