How to send mail from Outlook while overseas (receipt is fine)

Which options does a user have these days for sending e-mail (via MS
Outlook) while roaming around various countries?

It's not an option asking the user to reconfigure the SMTP settings to the
local provider at each location.

Access must be via MS Outlook (due to plug-ins to 3rd party apps) - Hotmail,
webmail are not options.

AOL Option
=========

I've spoken to AOL, as one potential option. After a thorougly draining
experience trying to communicate my problem and being given the answers to
different questions altogether, I have this information:

1. We can purchase "AOL's Bring Your Own Access" for £6.99/month - which
provides dialup access overseas.

2. To send e-mail from an overseas location requires that the sender's
address in Outlook is set up as whatever@xxxxxxx rather than
whatever@xxxxxxxxxxxxxx (If correct, this option is unacceptable.)

3. I'm unclear if access will be available via network connections at, say,
a hotel, conference center or client site.

Would the AOL account suit our needs?


Other options/thoughts:
================

--- 1 ---
I've looked into running a local SMTP server (supplied with XP), but I know
that some ISPs will block port 25 access to any location but their own SMTP
servers - so, that will probably not be the solution.

--- 2 ---
Dedicate an SMTP server at our UK office location but only accept incomming
connections on an otherwise unused port (not port 25 or other common blocked
ports) with strong passwords and no anonymous relaying, (with a
certificate?).

Is this viable, and what do I need to set it up (any easy-to-use free, or
free demo and purchase when happy, apps that can do this?) - perhaps XP can
do it by setting up some port forwarding on the router/firewall (I can't see
any options in the IIS settings to change the SMTP port)?

Are there any providers of such a service already (i.e. SMTP/port 25
disguises)?

--- 3 ---
Remote Desktop is unlikely to be an option, but we'd try it if it were the
only way.

Any thoughts or links?

Thanks.


.

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