nanog mailing list archives

Re: Hotmail-- Again??


From: Suresh Ramasubramanian <ops.lists () gmail com>
Date: Wed, 13 Apr 2005 07:18:41 +0530


On 4/12/05, Matthew Black <black () csulb edu> wrote:
    2. After given a numeric SMTP error response code between 500 and 599
       (also known as a "permanent non-delivery response"), the sender must
       not attempt to retransmit that message to that recipient.

Microsoft Outlook doesn't follow this rule. Outlook perpetually retries
sending messages which encounter an SMTP permanent error between
500 and 599. How interesting that their on-line e-mail service has
rules that prevent use of the parent company's own products.  <8-)

Outlook is not an MTA and it is not going to connect to MSN/Hotmail's
servers to deliver mail.

And Hotmail is run by a rather different group of people than those
that code Outlook.

-- 
Suresh Ramasubramanian (ops.lists () gmail com)


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