Re: SMTP Relay

From: Tarran (Tarran_at_discussions.microsoft.com)
Date: 03/20/05 

Date: Sun, 20 Mar 2005 04:41:04 -0800

Hi Lanwench,

Thanks for your reply. Is there a way to autenticate a user without knowing
there IP address?

Some of our users travel around very frequently and use internet connections
from hotels or airports and we don't know there public IP address.

Most users just use OWA but a single user in all cases use POP3 and SMTP.

This was setup on our previous version of exchange 2k; I've tried to copy
our previous setup from exchnage 2k to exchange 2k3 and It still doesn't work.

I can't seem to get this to work. Do you know of any good tutorials on doing
this?

Many Thanks,
Tarran

"Lanwench [MVP - Exchange]" wrote:

> Tarran wrote:
> > Hi All,
> >
> > Does anyone one know of a tutorial for allowing certain external
> > users to use exchange as their smtp relay server.
> >
> > Many Thanks,
> > Tarran
>
> Well, if you know the public IP they'll be connecting from, you can permit
> that IP to relay. If they have mailboxes on your server, you can allow them
> to authenticate.
> Personally, I'd just tell POP users to use their own SMTP server, and if
> these are users with mailboxes on your server, have them use OWA. I prefer
> not to open up any relay - even permitting authenticated relay can leave you
> open to someone exploiting it and using your server to send out spam.
>
>
>

Relevant Pages

  • Re: Accessing pop3 mail from our relay server.
    ... The best way to do pop3 in that manner ... would publish those services using ISA server and some authentication ... >> Are you sure you want to allow POP3 access to the mailboxes? ... >>> exchange 2000 server as a relay in our dmz. ...
    (microsoft.public.exchange.setup)
  • Re: Accessing pop3 mail from our relay server.
    ... Don't really want to open up pop3 but we have been asked to provide email ... Whats an FE server?? ... > Are you sure you want to allow POP3 access to the mailboxes? ... >> exchange 2000 server as a relay in our dmz. ...
    (microsoft.public.exchange.setup)
  • Re: Relaying - Is it possible...
    ... This is regarding Exchange 2000 and I'm sure it's the same on ... hitting our main exchange server. ... mail server that will only relay specific address's on the front end server ...
    (microsoft.public.exchange.setup)
  • Re: Relay Question
    ... An open relay ... is an SMTP e-mail server that allows third-party relay of e-mail messages. ... Exchange 2003 is by default configured to prevent open relay. ... Microsoft does not control these sites ...
    (microsoft.public.windows.server.sbs)
  • Re: Exchange 2003 Private Store Corruption
    ... I think you're on the right track with creating a new mailbox store. ... Moving mailboxes is one option. ... Online Diagnostic Utility says "Correctable Memory Threshold Exceeded" ... get the server back up and running without the faulty memory installed. ...
    (microsoft.public.exchange.admin)