Solved

550 5.5.0 Invalid EHLO/HELO domain

Posted on 2010-11-18
4
8,901 Views
Last Modified: 2012-06-22
I'm trying to send an e-mail to a mail server from my Exchange Server 2007 but I got an error:  550 5.5.0 Invalid EHLO/HELO domain

What should I do?

Thanks.
0
Comment
Question by:anovaes
[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
4 Comments
 
LVL 35

Expert Comment

by:Ernie Beek
ID: 34162898
0
 
LVL 27

Expert Comment

by:Dr. Klahn
ID: 34162926
The only thing that follows SMTP HELO or EHLO is the connecting system's fully-qualified name, e.g.

HELO mail.yahoo.com
EHLO smtp.somewhere.org

"Invalid EHLO/HELO domain" is a peculiar way to phrase this error message.  Two possibilities come to mind:

a) It directly refers to the HELO/EHLO fully-qualified name.  The only thing that can be wrong is that the fully-qualified name is somehow unacceptable to the receiving system's SMTP server.

b) It indirectly refers to the fully-qualified name in the HELO/EHLO.  What it really means is "Your name is badly formed," "I can't do an RDNS on your name," or "I've got a blacklist and you're on it."

There are some other possibilities as well.  See the description of SMTP status 550 at this PDF page

0
 
LVL 76

Accepted Solution

by:
Alan Hardisty earned 500 total points
ID: 34163023
Check your SEND connector - look at the General Tab and specifically, the FQDN entered there.  If it ends .local, which it might - that will be your problem.

Change it to something like mail.domain.com to match your MX record and Reverse DNS record, which you should have setup correctly too.
0
 

Author Closing Comment

by:anovaes
ID: 34260047
That's it.
0

Featured Post

Enterprise Mobility and BYOD For Dummies

Like “For Dummies” books, you can read this in whatever order you choose and learn about mobility and BYOD; and how to put a competitive mobile infrastructure in place. Developed for SMBs and large enterprises alike, you will find helpful use cases, planning, and implementation.

Question has a verified solution.

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

This process describes the steps required to Import and Export data from and to .pst files using Exchange 2010. We can use these steps to export data from a user to a .pst file, import data back to the same or a different user, or even import data t…
This article lists the top 5 free OST to PST Converter Tools. These tools save a lot of time for users when they want to convert OST to PST after their exchange server is no longer available or some other critical issue with exchange server or impor…
In this video we show how to create a Resource Mailbox in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: Navigate to the Recipients >> Resources tab.: "Recipients" is our default selection …
Exchange organizations may use the Journaling Agent of the Transport Service to archive messages going through Exchange. However, if the Transport Service is integrated with some email content management application (such as an antispam), the admini…

740 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