Wheneve I sent email to hotmail.com, it is rejected by them.  This is the
error message when I used SMTPDIAG to diagnose the problem.

Error: Expected "250".  Server rejected the sender address.
Failed to submit mail to mx3.hotmail.com
Error: Expected "220".  Server is not accepting the connection.
Failed to submit mail to mx3.hotmail.com

I can send email to other domain.

This is my internal SMTP server for outbound email only, not for incoming.
I also have a smart host in my DMZ, if I put the smart host ip into my
internal SMTP, the email can go to hotmail.com but if I do not use the smart
host, it cannot be delivered.

My internal DNS can do the name resolution for hotmail.com, therefore I
think that it is not related to DNS.

Any idea? thanks!

[ Post a follow-up to this message ]

On Tue, 18 Apr 2006 09:11:14 -0700, "Kane" <kane@worldwarranty.com>
wrote:

>Wheneve I sent email to hotmail.com, it is rejected by them.  This is the
>error message when I used SMTPDIAG to diagnose the problem.
>
>Error: Expected "250".  Server rejected the sender address.
>Failed to submit mail to mx3.hotmail.com
>Error: Expected "220".  Server is not accepting the connection.
>Failed to submit mail to mx3.hotmail.com
>
>I can send email to other domain.
>
>This is my internal SMTP server for outbound email only, not for incoming.
>I also have a smart host in my DMZ, if I put the smart host ip into my
>internal SMTP, the email can go to hotmail.com but if I do not use the smar
t
>host, it cannot be delivered.
>
>My internal DNS can do the name resolution for hotmail.com, therefore I
>think that it is not related to DNS.
>
>Any idea?

It's not you.  It's them.  And they're refusing your mail.  Most
likely because you use a dynamic IP or a broadband network IP range.

And you already found the solution.

Jeff

[ Post a follow-up to this message ]

I've seen this with several mail systems including Hotmail.  I ended up
using our domain that we have an MX record for within our DNS.  I think that
some of these mail hosts refuse emails that cannot be matched to a MX DNS
record.
--
Christopher A. Reed
"The oxen are slow, but the earth is patient."

"Kane" <kane@worldwarranty.com> wrote in message
news:OnaUaLwYGHA.5012@TK2MSFTNGP04.phx.gbl...
> Wheneve I sent email to hotmail.com, it is rejected by them.  This is the
> error message when I used SMTPDIAG to diagnose the problem.
>
> Error: Expected "250".  Server rejected the sender address.
> Failed to submit mail to mx3.hotmail.com
> Error: Expected "220".  Server is not accepting the connection.
> Failed to submit mail to mx3.hotmail.com
>
> I can send email to other domain.
>
> This is my internal SMTP server for outbound email only, not for incoming.
> I also have a smart host in my DMZ, if I put the smart host ip into my
> internal SMTP, the email can go to hotmail.com but if I do not use the
> smart host, it cannot be delivered.
>
> My internal DNS can do the name resolution for hotmail.com, therefore I
> think that it is not related to DNS.
>
> Any idea? thanks!
>

[ Post a follow-up to this message ]