Re: Error 553 or #5.7.1

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From: Patrick Genova [MSFT] (pgenova_at_online.microsoft.com)
Date: 03/04/04 

Date: Thu, 4 Mar 2004 07:10:11 -0500

Hi Peter,

>From the looks of that message you are an Open Relay. Use the articles below
to check your settings.

310380 HOW TO: Prevent Exchange 2000 from Being Used as a Mail Relay in
Windows
http://support.microsoft.com/?id=310380

314734 Relay Restrictions on Default Virtual SMTP Server Are Not Working
http://support.microsoft.com/?id=314734

Hope this helps, 

-- 
Patrick Genova
Pgenova@online.microsoft.com
Please do not send mail directly to this alias. This alias is for Newsgroup
purposes only.
This posting is provided "AS IS" with no warranties, and confers no rights.
"Peter" <anonymous@discussions.microsoft.com> wrote in message
news:6d6601c401a5$88005010$a101280a@phx.gbl...
> Very urgent help needed.
>
> Without any warning I have all mails from all users in
> the company being returned from I really don't know where
> with the following message type:
>
> Your message did not reach some or all of the intended
> recipients.
>
>       Subject: teste
>       Sent: 03-03-2004 22:26
>
> The following recipient(s) could not be reached:
>
>       madpax666@yahoo.co.uk on 03-03-2004 22:30
>             There was a SMTP communication problem with
> the recipient's email server.  Please contact your system
> administrator.
>             <domainctrl.sensitv.pt #5.5.0 smtp;553 sorry,
> that domain isn't in my list of allowed rcpthosts (#5.7.1)
> >
>
> I don't know why this started out but I  now have a
> bcaklog of a full day's worth of messaegs to have sent
> out to various destinataires and I just can't figure out
> if the problem is on my side or not. Nobody did anything
> to the Exchange server.
>
> XCHG is 2K on SBS2000 and clients are XP pro.
>
> Thanks for any help.
>
> We are using GFI MailEssentials.
>

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