dsbl.org

Joe_em · 發表於: 星期三六月 30, 2004 1:57 pm 文章標題: dsbl.org

I got a message telling me to come here.

We''''re sorry. If you bothered coming to this page, you are probably an innocent mail user who''''s mail has bounced back with a message telling you to come to this site. We''''ll try to explain what''''s happened.

You sent mail to a destination address. The person who runs the mail server at that address has chosen to refuse email from dangerously misconfigured, insecure, or abuseable servers based on a list that we publish. They most likely did this because blocking mail that originates from servers in our list can significantly reduce the amount of UCE (unsolicited commercial email), or spam, that users of their mail server receive.

Please don''''t misunderstand; we''''re not implying that you send spam. The message that you received simply means that the administrator of your server either doesn''''t know, or has chosen to run an open relay or open proxy.

An open relay is a mail server that will accept and deliver mail from anywhere to anywhere. This is as opposed to properly configured mail servers, which will only accept mail from or to their own site. Many spammers send spam through these relays, which act as amplifiers and anonymizers for their messages.

How to fix this.

Of course, you want your mail to go through. In order for this to happen, your Internet Provider needs to fix their mail server. You can point them to this page, if you like; there are instructions linked off our front page fixing most mail servers. As soon as your provider fixes their server and requests removal from this website, your mail will start going through again.

But my provider says that they aren''t an open relay!

Looking up any IP address listed in DSBL on our website will display a copy of a message actually relayed through that server, with full headers and SMTP envelope. DSBL only adds hosts to our database that actually relay mail; accepting the mail then dropping it won''t get a host listed.

But the open relay was fixed last week!

Since DSBL does not do tests of servers, it has no way to detect that your server was fixed. The administrator of the server can remove the server from DSBL at any time. However, it is advisible to fix the security problem before requesting to be removed from DSBL, since servers with a persistant security problem tend to get listed again eventually.

My provider says that they have to be an open relay.

No server has to be an open relay. For installations that have users sending mail from all around the world (such as many web hosting companies), SMTP AUTH is an excellent solution for avoiding open relay.

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以上是dsbl.org網頁的說明
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請問：

這是不是說我們因為OPEN RELAY被列入名單?

那麼，我們第二個MAILD不就不應該用?
除非我們有第二個IP可以使用PORT 25?

Arnor · 發表於: 星期三六月 30, 2004 5:52 pm 文章標題: Re: dsbl.org

Frank Hsu · 發表於: 星期三六月 30, 2004 11:32 pm 文章標題: Re: dsbl.org

Joe_em · 發表於: 星期四七月 01, 2004 12:02 pm 文章標題:

被這個機構列入以後，好幾家客戶收不到我們的信了
很煩......

至於為何要用第二個port 25，我在看那機構網頁時，發現他連我用哪個PORT出去都知道，所以我懷疑是因為我第二個MAILD因為不是用port 25而被認為是OPEN RELAY

而且我還沒發現過被別人RELAY過

Frank Hsu · 發表於: 星期四七月 01, 2004 5:43 pm 文章標題:

Joe_em · 發表於: 星期二七月 06, 2004 11:04 am 文章標題:

很不幸，因為和信沒提供反解，導致他們根本無法發信給我

而這個機構根本不讓人用其他方式連絡，除了根據他們網頁上的指引

你知道我後來怎麼解決嗎?

把和信換掉，換成有提供反解的HINET
公司的信件讓重要客戶收不到，事情很大條........