Solved

Unable to send email to other domain #5.5.0 smtp;500 Firewall Error

Posted on 2008-10-07
8
1,561 Views
Last Modified: 2010-04-21
When I try to send an email to an external domain, I receive this error message:

There was a SMTP communication problem with the recipients email server.  Please contact your system administrator. <ourdomain.local #5.5.0 smtp;500 Firewall Error>

What does this mean? This only occurs when I send emails with attachments.
0
Comment
Question by:katredrum
  • 5
8 Comments
 
LVL 12

Expert Comment

by:TK-77
ID: 22665312
Check your SMTP settings. You may have to select "My Outgoing Server (SMTP) Requires Authentication.

TK
0
 
LVL 1

Author Comment

by:katredrum
ID: 22665334
TK, Are you referring to Outlook 2007 or on Exchange Server 2007?
0
 
LVL 1

Author Comment

by:katredrum
ID: 22665336
I don't know of any SMTP settings in Outlook 2007.
0
PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

 
LVL 1

Author Comment

by:katredrum
ID: 22671621
Does anyone know if this issue is on my side (Exchange Server or Router) or the destination's (Exchange Server or Router)? I am trying to narrow down where the problem could lie.

0
 
LVL 57

Accepted Solution

by:
giltjr earned 500 total points
ID: 22685812
0
 
LVL 1

Author Comment

by:katredrum
ID: 22691826
qiltjr, your second link is more like what I am experiencing. I also have a Cisco 1760 and use CBAC. The only SMTP inspection occurs from inside to outside. I have disabled this and will try.


0
 
LVL 1

Author Closing Comment

by:katredrum
ID: 31504079
Cisco CBAC SMTP inspection generated this error. Apparently ip inspect smtp doesn't work well with Exchange Servers.
0

Featured Post

NAS Cloud Backup Strategies

This article explains backup scenarios when using network storage. We review the so-called “3-2-1 strategy” and summarize the methods you can use to send NAS data to the cloud

Question has a verified solution.

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

I had an issue with InstallShield not being able to use Computer Browser service on Windows Server 2012. Here is the solution I found.
This article will inform Clients about common and important expectations from the freelancers (Experts) who are looking at your Gig.
In this Micro Video tutorial you will learn the basics about Database Availability Groups and How to configure one using a live Exchange Server Environment. The video tutorial explains the basics of the Exchange server Database Availability grou…
Viewers will learn how to connect to a wireless network using the network security key. They will also learn how to access the IP address and DNS server for connections that must be done manually. After setting up a router, find the network security…

809 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