Re: Outgoing mail via multiple smart hosts?
- From: "Merv Porter [SBS-MVP]" <mwport@xxxxxxxxxxxxxxxxxxx>
- Date: Sun, 22 Jul 2007 20:27:32 -0400
This article says that it can be done but you should use an SMTP Connector
rather than a Virtual SMTP Server. However, I'm not sure how you'd handle
auhentication to the multiple smarthost domains since it appears that each
SMTP connector can only handle a single authentication username/password.
Probably better/easier just to use multiple SMTP Connectors.
How to Configure Exchange Server 2003 to Use a Smart Host IP Address
http://support.microsoft.com/kb/821911
--
Merv Porter [SBS-MVP]
============================
"Kevin Weilbacher" <kw@xxxxxxxxxxxxxxxxxxx> wrote in message
news:EC0E06FC-9F33-41B9-A640-6CB92E7B2594@xxxxxxxxxxxxxxxx
Merv is correct --- to enter an IP address for an SMTP server, surround
the ip address with square brackets --
[11.22.33.44]
I do not know of a way to make a list of smart hosts for Exchange to use.
--
Kevin Weilbacher [SBS MVP]
"The days pass by so quickly now, the nights are seldom long"
*
"nik" <nik@xxxxxxxxxx> wrote in message
news:%23fwtX5KzHHA.4800@xxxxxxxxxxxxxxxxxxxxxxx
Hi Group:
We run SBS2003 (2003 Server SP2) with Exchange 2003 SP1. The SBS machine
sits behind a NAT with no direct connection to a public IP, and all
outgoing external email is routed via a smart host at our ISP.
We sometimes switch ISPs temporarily, from a DSL to a 3G route, when
there are DSL connectivity problems at our location. So I need to know
how to reconfigure Exchange to use multiple outgoing mail services.
(Incoming mail is fine, as all incoming is routed via a POP box and the
POP connector.)
Looking into the Exchange configuration for outgoing mail has confused me
mightily, and I would be grateful for answers to any or all of the
questions below...
1: I currently have our ISP's Smart Host name entered into Exchange in
two fields of the Default SMTP Server setup - under
"Messages > Forward all mail with unresolved recipients to host:" AND
"Delivery > Advanced > Smart Host.
Is this correct for a setup like mine? I've read that I should really
use smart hosts via an SMTP connector, not a VS, but I'm really not clear
on the difference between a SMTP VS and a Connector...? If I want to use
two ISPs, should I set up two virtual servers, two connectors, or
something else?
2: I am confused about what to enter in the Fully Qualitfied Domain Name
box - this server's FQDN is "server.domain.local", but if I put that in
the box, outgoing mail is returned with a "Server server.domain.local
requires authentication." error. I'm not sure how to interpret this,
since I'm not sure what the FQDN box does in the first place..?
3: If I need to switch ISPs, I need to enter a different Smart Host - but
our auxiliary ISP only provides SMTP server addresses as numeric IPs.
When I enter a numeric IP in the Smart Host box (in the Default Virtual
Server config), the setting is rejected because "the domain is not
valid". Why can't I enter a numeric IP as an outgoing SMTP server?
4: Isn't there a really simple way of giving Exchange a list of SMTP
servers (smart hosts) to try, in order of preference?
Thanks for any wisdom!
nik
.
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