Outlook Express - SMTP

Posted on 2000-03-20
Last Modified: 2010-04-08
I work on a Computer running Outlook Express. I'm new in this Company... unfortunately others use Pegasus Mail, etc. I really want to use Outlook.

Question: Pegasus mail can send emais with SMTP to local and external sites. Pmail has the same settings as my Outlook. Te SMTP site is ns.x.x, and the POP3 is mail.x.x, so they're not the same. Whenever I send an email from Outlook Express to an external friend, I got an error message: relaying denied. If I do this with Pegasus mail, it succeeds. Both of them works for local addresses.
I tried it with 'telnet ns 25', probing all of the commands, and flows, but I always get relaying denied.

Telnet 25 says the server is ESMTP Sendmail 8.9.3/8.9.3.

What can I do for my Outlook Express ?

Question by:stewe
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 3

Expert Comment

ID: 2636490
Could it possibly be that the SMTP server is requiring POP3 authentication before sending? It's becoming more popular...

Author Comment

ID: 2636525
How can I set it up in Outlook ? And in Outlook Express ?
And I wrote, the 2 machine is not the same. Is it matter ?

Expert Comment

ID: 2636571
It's not something that Outlook supports internally. Right now the usual solution is to use an external utility to poll the mailbox just prior to sending. You can find a good one here:

You should test out the theory by having Outlook/OE poll your mailbox then try to send and see if it works.
Create Professional Looking Email Signatures

Create "Professional HTML Email Signatures" with ease.
7 Day Money Back Guarantee if not 100% Satisfied.
Affordable - Try it out for 7 Days Totally Risk Free.
Installers provided for over 45 Email clients.
Both Windows & MAC Supported.
Highly Recommended!


Author Comment

ID: 2639442
Doesn't work.
I still can't send and the error is the same...

Accepted Solution

VinceA earned 70 total points
ID: 2639622
See if any of the advice here helps (it's about Outlook 2000 but some of it may apply to OE):

You can also get this article by sending an E-mail with a subject of "Q214402" (without the quotes) to

This link should automate that for you:

Author Comment

ID: 2641234
Thanks, I really figured out what to do with our administrators.

They found some options to set in their Linux SMTP server, using the infos.


Featured Post

Online Training Solution

Drastically shorten your training time with WalkMe's advanced online training solution that Guides your trainees to action. Forget about retraining and skyrocket knowledge retention rates.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Finding original email is quite difficult due to their duplicates. From this article, you will come to know why multiple duplicates of same emails appear and how to delete duplicate emails from Outlook securely and instantly while vital emails remai…
When you have clients or friends from around the world, it becomes a challenge to arrange a meeting or effectively manage your time. This is where Outlook's capability to show 2 time zones in one calendar comes in handy.
The viewer will learn how to create two correlated normally distributed random variables in Excel, use a normal distribution to simulate the return on different levels of investment in each of the two funds over a period of ten years, and, create a …
Many of my clients call in with monstrous Gmail overloading issues with Outlook. A quick tip is to turn off the All Mail and Important folders from synching. Here is a quick video I made to show you how to turn off these and other folders in Gmail s…

734 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question