As I expected, port 25 was the problem. See my reply to Diane here.

Fortunately, I did not need to work through exchange, and was able to
program the email send directly.

Thanks again for you input,
Mark

"K. Orland" wrote:

When Outlook is set to connect to Exchange, it polls. Read here for more
information on that:

http://groups.google.ca/group/micros...836cd8d50558fb

You didn't mention what version of Exchange, what version of Outlook, and
how the user is connecting to Exchange. Are they on the same LAN, connecting
remotely via VPN, another method perhaps?

--
Kathleen Orland - MVP Outlook
Outlook Tips: http://www.outlook-tips.net/
http://www.howto-outlook.com/



"Markus" wrote:

Port 25 is sometimes blocked by some ISP to reduce spam issues. For my
clients not using Exchange, I step them thru the Outlook screens to allow
them to locate the port that is now working with OL and use that same port in
an email program I wrote. I have a client using Exchange that is having
trouble getting a connection with SMTP server, and I thought the most likely
reason is that Port 25 is blocked.

Course, I am not familiar with Exchange, so maybe I am off base on this.
Maybe others here could help me out with more info on it.

Am particularly curious on how Exchange sends email if a port is not
specified, but OL without Exchange requires ports to be specified.

I have written a program to cycle thru some other port options if a SMTP
connect fails when sending email with my program, and am planning to try this
out with this client.

Appreciate any insight on this,
Mark

"K. Orland" wrote:

You don't need an outgoing port number with Exchange. Why do you ask? Is the
user unable to send email or experiencing any issues?

--
Kathleen Orland - MVP Outlook
Outlook Tips: http://www.outlook-tips.net/
http://www.howto-outlook.com/



"Markus" wrote:

I have a client that uses Outlook with Exchange server. I do not have
Exchange Server, and so the options in my outlook menu are different than
theirs.

I am trying to find where I could direct them in the Outlook menus to find a
reference to the Outgoing server port for email.

In my Outlook it is:
Tools/Options/Mail Setup tab/Email Accounts

Then you get a list of accounts and can choose Change to see the values for
that email account. When you choose Advanced tab, it provides info on the
port numbers being used for Out and Incoming mail servers.

Can anyone tell me how I can find this same info using the Outlook menu if
Outlook is running thru Exchange Server? I found an Advanced tab, but it
does not have this info.

Thanks for any and all help on this,
Mark