Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

Sneding external email from outlook locted in a DMZ on a firwall

Posted on 2004-09-10
3
Medium Priority
?
239 Views
Last Modified: 2010-04-09
Receive this message when I try to send external email

The message could not be sent because one of the recipients was rejected by the server. The rejected e-mail address was 'bytron123@yahoo.co.uk'. Subject '', Account: 'mv', Server: '192.*.1.*', Protocol: SMTP, Server Response: '554 <******123@yahoo.co.uk>: Recipient address rejected: Relay access denied', Port: 25, Secure(SSL): No, Server Error: 554, Error Number: 0x800CCC79

Outlook allows to send mail from this email account sat in a DMZ to other internal accounts.  I can also telnet to the SMTP server on port 25

Answers would be appreciated
0
Comment
Question by:bytron
[X]
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 Comments
 
LVL 17

Accepted Solution

by:
Steve McCarthy, MCSE, MCSA, MCP x8, Network+, i-Net+, A+, CIWA, CCNA, FDLE FCIC, HIPAA Security Officer earned 1000 total points
ID: 12034908
Try going into the Exchange Manager and allow a relay of the IP address of just the machine that has the outlook client on it.  I had to do this for the exact same issue.
0

Featured Post

Cyber Threats to Small Businesses (Part 1)

This past May, Webroot surveyed more than 600 IT decision-makers at medium-sized companies to see how these small businesses perceived new threats facing their organizations.  Read what Webroot CISO, Gary Hayslip, has to say about the survey in part 1 of this 2-part blog series.

Question has a verified solution.

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

The DROP (Spamhaus Don't Route Or Peer List) is a small list of IP address ranges that have been stolen or hijacked from their rightful owners. The DROP list is not a DNS based list.  It is designed to be downloaded as a file, with primary intention…
This article offers some helpful and general tips for safe browsing and online shopping. It offers simple and manageable procedures that help to ensure the safety of one's personal information and the security of any devices.
In this video, Percona Solution Engineer Dimitri Vanoverbeke discusses why you want to use at least three nodes in a database cluster. To discuss how Percona Consulting can help with your design and architecture needs for your database and infras…
In this video, Percona Solution Engineer Rick Golba discuss how (and why) you implement high availability in a database environment. To discuss how Percona Consulting can help with your design and architecture needs for your database and infrastr…
Suggested Courses

604 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