Re: EX address displays in Outlook Contacts instead of SMTP

In news:9AF4BAE6-EEC3-4B88-B42C-E976D6206C79@xxxxxxxxxxxxx,
Sean Mackey <SeanMackey@xxxxxxxxxxxxxxxxxxxxxxxxx> typed:
Can we just address the issue at hand. For whatever reason some of
our Outlook clients display users by their EX address instead of
their SMTP address in the Address book when generating a new message.
The side issue of how a company uses an Exchange server is in my
opinion irrelevant. The format of using an Exchange box for
colaboration and calendering and an external pop3 server for internet
email is not that uncommon.

No, but it's very clumsy and tends to lead to problems. That said, I did
make a suggestion about checking your recipient policy.& the mailbox
properties. Did you read that?

I also have clients who use Exchange
exclusively including Outlook web access.

"Lanwench [MVP - Exchange]" wrote:

In news:47BEC6DB-C266-42B7-841C-A8FB26CDF5DF@xxxxxxxxxxxxx,
Sean Mackey <SeanMackey@xxxxxxxxxxxxxxxxxxxxxxxxx> typed:
We use an external pop3 server as an extra layer of security.

Pardon my jumping in, but I have to take issue with the security
aspects here, sorry. Are all your clients connecting to your ISP's
POP server using SSL? If not, you're transmitting all of your users'
login credentials over the Internet in clear text. That ain't secure.

And since you've got your clients configured to handle mail, you
can't have your Exchange server (or any centralized server product
you manage) do realtime antivirus or antispam filtering - all it
could do is act after the message hits the mailbox. That doesn't
sound secure to me. Oh, and they can't use OWA or RPC over HTTP or
anything to access their mail....only Outlook, in that profile, when
they're logged in and it's up and running.

A secured network prolly shouldn't allow its range of workstation
IPs to access anything on the internet outside of ports 80 and 443.

If you really care about security, and you don't want to expose your
Exchange server directly to the internet, you don't use POP - you'd
get another SMTP server of some other kind, (Postfix? Sendmail?) and
put it in your DMZ - it would receive the Internet mail for your
domain(s) directly via SMTP, and send it all over to your Exchange
box in the LAN, which would be configured to reject connections from
any IP other than the Postfix box (and port 25 wouldn't be open from
WAN to LAN).

However, if you don't want to expose SBS to the internet, it will be
difficult for you to give people access to OWA/RWW/remote mail
without using VPN - and that should be IPSec VPN using your firewall
as an endpoint.

Most small companies don't do any of the above, note. I'm not sure
what security risks you think you'll run into by enabling port 25
inbound to your Exchange box.


POP3
servers are common.

Yes, but that isn't really relevant. You're not really taking
advantage of your Exchange server here -

The EX address is the default x.400 address
provided by Exchange.

Sounds like your recipient policy is set up wrong. You need to add
the real public Internet domain to it, and make it the default -
then make sure the RUS stamps all mailboxes with the appropriate
addresses & defaults. But the rest of my comments still stand. <tips
hat>


"Justin - synacs" wrote:


Sean Mackey wrote:
I am running SBS 2003 with all service packs. I have installed
Exchange 2003 SP2. The organization uses an external pop3 server
to route internet email.

Why?

The external address has been added as default in user manager.
Outlook clients are configured with an Exchange account and a pop3
account which is default.

My SBS clients don't even know what POP3 is.

address correctly but when you open a new email message and click
TO the EX address is the only option.

What exactly do you mean by EX address? Is that External? As in,
user@xxxxxxxxxxx?



.

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