Re: SMTP is not relaying messages from outsite authenticated users

sam.s.kong@*do not post email addresses* wrote:
> Hi, all!
>
> I have an Exchange 2000 Server on Windows 2k.
> POP3 is fine but SMTP works only for computers within the same subnet
> even if the sender is authenticated.

What specific errors do the clients get when trying to relay? Have you
double-checked the relay connection settings on your virtual SMTP server?

>
> I setup the relay for authenticated users (not computer specific).
> There's no firewall in the network.
>
Well, that is a very very bad thing. You need one. No way of knowing what
unwanted visitors you have already had on your network :(

> It used to work but since months ago it hasn't been working.
> Does anyone know what's wrong?

What has happened since?
What SP on E2k?
What SP on W2k?

I presume that only *external* users are collecting Exchange mail via POP,
right? (I wouldn't want to use POP at all; I'd rather have them use OWA, but
for internal users, *definitely* not POP/IMAP as you miss out on most of the
Exchange features).

Honestly, if it were me, I'd have any external POP users use their own
ISP's SMTP server and disable relay entirely, as even authenticated relay
can be fairly easily exploited by spammers.

>
> TIA.
> Sam


.

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