I think you're right, Mark. My ISP stopped allowing mail relays through its SMTP servers a couple of years ago, and as of last month, IBM, where I work as a contractor, also established this policy. This caused some degree of consternation among IBM users, especially contractors, but it turned out that they had provided a single server per major geographic region which was open for relays from within IBM's network, so we could continue to use our other accounts to communicate.

One way he can test, if he has more than one account, is to try to send an email from one of his alternative accounts through his ISP's SMTP server. For example, I have an account with the consultancy for which I am employed. If I try to send an email from that account from my home system, which is a DSL account with my ISP, I receive an error message and the transmission fails. The message I typically receive in such an event (OE 6.0) is "No Socket error: 10060."

Although inconvenient, I can see the ISP's point of view; open relays are a primary vector for spam and DDOS attacks. It is unfortunate that the scumbags of the earth have forced such measures to be taken, but it is apparently now the nature of the online world.

Cheers,
Scott

----- Original Message ----- From: "Mark Groen" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Wednesday, January 12, 2005 1:51 AM
Subject: Re: [wdvltalk] Is the way right?



On Tue, 11 Jan 2005 15:41:30 -0600, Zhao <> wrote:
   Hello Mark:

   Thanks so much for introducing me "How To Test Windows
2000 IIS SMTP Services Manually" I use the steps by this article
to check the work of SMTP in my IIS and find question. The
following is the result.

When I type "helo"  and "mail from:[EMAIL PROTECTED]",
the outputs/replies are all right.

  BUT when I type "rcpt to: [EMAIL PROTECTED]",
It should reply as: "250 OK - Recipient [EMAIL PROTECTED]"
To my disappointment it ACTUALLY replies :
              550 5.7.1 Unable to relay for [EMAIL PROTECTED]

  The reply indicates that the SMTP does not doing the "rcpt" normally.
No wonder the recipient did not receive letters.

  What is the ERROR of "550 5.7.1 Unable to relay for ."? How to solve
the error and make the SMTP sending emails normally to be able to be
received?

As I'm typing this noticed Stephen's message come in, agreed, a quick Google always helps and is lots of time faster than the list (I live on an island, and winter weather has us with no internet for most of today for instance).

Anyhoo... his links are telling you that your ISP is not allowing mail
relays from your address: [EMAIL PROTECTED]; probably allowing
only email originating from their domain to pass through their mail
server. Again, not familiar enough with Windows and what you are
actually trying to do, but a quick fix could possibly be changing the
domain the email is being sent out from, to your ISP's domain and your
regular email account with them?

cheers,

            Mark

            MG Web Services
            www.mgwebservices.ca

Your Canadian West Coast web site development and hosting solution.

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